biology assignment for class 9 pdf

Download Sample Questions and Assignments for Class 9 Mathematics and Science with important Topic- Wise Questions. These Sample Questions and Assignments have been prepared as per the syllabus issued by CBSE, KVS and topics given in NCERT Book. Solving this Sample questions and Assignments will help in scoring in more marks in your class tests and school examinations.

Click on links below for Assignments with important questions for Class 9 Mathematics and Science chapter wise.

Assignment For Class 9th Mathematics Topic -wise- PDF Download

Chapter 1: number system.

Assignment of Mathematics Chapter 1 Number System Assignment

Chapter 2: Polynomials

Assignment of Mathematics Chapter 2 Polynomials Assignment 1

Assignment of Mathematics Chapter 2 Polynomials Assignment 2

Chapter 3: Linear Equation in Two Variables

Assignment of Mathematics Chapter 3 Linear Equation in Two Variables Assignment

Chapter 4: Coordinate Geometry

Assignment of Mathematics Chapter 4 Coordinate Geometry Assignment

Assignment For Class 9th Biology Topic -wise- PDF Download

Chapter 1: the fundamental unit of life: cell.

Assignment of Biology Chapter 1 The Fundamental Unit of Life: Cell Assignment 1

Assignment of Biology Chapter 1 The Fundamental Unit of Life: Cell  Assignment 2

Assignment of Biology Chapter 1 The Fundamental Unit of Life: Cell  Assignment 3

Assignment of Biology Chapter 1 The Fundamental Unit of life: Cell  Assignment

Chapter 2: Tissue

Assignment of Biology Chapter 2   Tissue  Assignment 1

Assignment of Biology Chapter 2 Tissue  Assignment 2

Assignment of Biology Chapter 2 Tissue Assignment 3

Assignment of Biology Chapter 2 Tissue  Assignment 4

Assignment For Class 9th Chemistry Topic -wise- PDF Download

Chapter 1: matter in our surrounding.

Assignment of Chemistry Chapter 1 Matter In Our Surrounding Assignment 1

Assignment of Chemistry Chapter 1 Matter In Our Surrounding Assignment 2

Assignment of Chemistry Chapter 1 Matter In Our Surrounding Assignment 3

         2. Is Matter Around Us Pure

Assignment of Chemistry Chapter 2  Is Matter Around Us Pure  Assignment 1

Assignment of Chemistry Chapter 2 Is Matter Around Us Pure  Assignment 2

Assignment of Chemistry Chapter 2 Is Matter Around Us Pure  Assignment 3

Assignment For Class 9th Physics Topic -wise- PDF Download

Chapter 1: motion.

Assignment of Physics Chapter 1 Motion Assignment 1

Sample Question for Physics Motion Assignment 2

Assignment of Physics Chapter 1 Motion Assignment 3

Assignment of Physics Chapter 1 Motion Assignment 4

Assignment of Physics Chapter 1 Motion Assignment 5

Chapter 2: Force and Laws Of Motion

Assignment of Physics Chapter 2 Force and Laws Of Motion Assignment 1

Assignment Class 8 Science

Assignment Class 9 Science

Assignment Class 10 Science

Assignment Class 11 Physics

Assignment Class 11 Chemistry

Assignment Class 11 Biology

Assignment Class 12 Physics

Assignment Class 12 Chemistry

Assignment Class 12 Biology

Mathematics Assignments

Assignment Class 8 Math

Assignment Class 9 Math

Assignment Class 10 Math

Assignment Class 11 Math

Assignment Class 12 Math

Sample Papers

Sample Paper Class 8 Science

Sample Paper Class 9 Science

Sample Paper Class 10 Science

Sample Paper Class 8 Math

Sample Paper Class 9 Math

Sample Paper Class 10 Math

Sample Paper Class 11 Physics

Sample Paper Class 11 Chemistry

Sample Paper Class 11 Biology

Sample Paper Class 11 Mathematics

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Sample Paper Class 12 Chemistry

Sample Paper Class 12 Biology

Sample Paper Class 12 Mathematics

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Biology Worksheets, Notes, and Quizzes (PDF and PNG)

This is a collection of free biology worksheets, notes, handouts, slides, study guides and quizzes. Most content targets high school, AP biology, genetics, anatomy/physiology, immunology, and biology 101 and 102 in college. There is also biochemistry and physics for biologists. However, some resources are at the grade school and middle school level.

The files are PDF, PNG, JPG, and formats using Google Apps for Google Classroom. Most of the time, these formats are interchangeable. So, if you see something you like, but want a different format, just let us know. Print these resources, make transparencies and slides, etc.

In the interest of quick load time, not all of the images are shown. If you’d rather see them all, just contact us!

Biochemistry

[ Google apps worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ][ answers PNG ]

Enzymes Definitions

[ Google Slides worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ][ answers PNG ]

• 20 Amino Acids [ PNG ][ PDF ]
• Amino Acid Side Chains [ PNG ][ PDF ]
• Identifying Type of Biological Macromolecules [ Google Slides worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ][ answers PNG ]
• Disaccharide Examples [ PNG ]
• Products of Photosynthesis [ JPG ]
• Anabolism vs Catabolism [ PNG ]
• 3 Parts of a Nucleotide [ PNG ]
• Fermentation Definition and Examples [ PNG ]

General and Cell Biology

Organelles and Their Functions

Parts of a Plant Cell

Label Parts of a Chloroplast

[ Google Apps worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ][ answers PNG ]

Label Parts of a Mitochondria

Label the Animal Cell

[ Google Apps worksheet ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Prokaryotes vs Eukaryotes Worksheet

Steps of the Cell Cycle

Steps of Mitosis

Membrane Transport Terms and Definitions

Membrane Transport Worksheet #2

The Plasma Membrane

Label a Bacterial Cell

• Label a Bacteriophage [ Google Apps worksheet ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]
• Evidence of Evolution Worksheet [ Google Apps worksheet ][ Worksheet PDF ][ Worksheet PNG ][ Answers PNG ]
• Evolutionary Processes Worksheet [ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]
• Major Receptor Families [ Google Apps worksheet ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]
• Label a Bacterial Cell Membrane ( E. coli ) [ Google Apps worksheet ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Anatomy and Physiology

These worksheets are only a portion of the available anatomy and physiology worksheets. Human anatomy and physiology worksheets have their own section.

Label the Heart

Label the Eye

[ Google Apps worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ]

Types of Blood Cells

[ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Label the Muscles

[ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Label the Ear

[ Google Apps worksheet ][ Worksheet PDF ][ Worksheet PNG ][ Answers PNG ]

Label the Lungs

Label the Kidney

Label the Liver

Label the Large Intestine

Label the Stomach

[ Google Apps worksheet ] [Worksheet PDF ][ Worksheet PNG ][ Answers PNG ]

External Nose Anatomy

[ Worksheet PDF ][ Worksheet Google Apps ][ Worksheet PNG ][ Answers PNG ]

Parts of the Nose

Label Bones of the Skeleton

Label the Lymph Node

Label the Parts of the Brain

Label the Lobes of the Brain

Brain Anatomical Sections

Arteries of the Brain

Label the Pancreas

Label the Spleen

Label the Digestive System

Label the Respiratory System

Parts of a Neuron

Label the Lips

Label the Skin

Label the Circulatory System

The Urinary Tract

[ Worksheet PDF ][ Worksheet Google Apps ][ Worksheet PNG ][ Answer Key PNG ]

The Bladder

• The Female Reproductive System [ worksheet PDF ][ worksheet Google Apps ][ worksheet PNG ][ answers PNG ]

Parts of a Flower

Label the Orchid Plant

[ Worksheet PDF ][ Worksheet Google Apps ][ Worksheet PNG ] [Answer Key PNG ]

Parts of an Orchid Flower

Parts of a Monocot Seed

Parts of a Fern

Parts of a Tree Trunk

Parts of a Tree

[ worksheet PDF ][ worksheet Google Apps ][ worksheet PNG ][ answers PNG ]

Parts of a Mushroom

Label the Shark

Label the Fish

Parts of a Bird

Bird Anatomy

Frog Life Cycle

Parts of a Mosquito (Insect)

Bones of the T. rex Skull

[ worksheets PDF ][ worksheet Google Slides ][ worksheet PNG ][ answers PNG ]

Holes of the T. rex Skull

• Label the T. rex Skeleton [ worksheets PDF ][ worksheet Google Slides ][ worksheet PNG ][ answers PNG ]
• Label Human Teeth [ Worksheet PDF ][ Worksheet Google Apps ][ Worksheet PNG ][ Answer Key PNG ]
• Monocot vs Dicot Seeds [ worksheet PDF ][ worksheet Google Slides ][ worksheet PNG ][ answers PNG ]
• Label the Moss [ worksheet PDF ][ worksheet Google Slides ][ worksheet PNG ][ answers PNG ]
• Diagram of the Human Eye [ JPG ]

Use a completed worksheet as a study guide.

Cells of the Immune System

Immune Cell Functions

[ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG #1][ answers PNG #1][ worksheet PNG #2][ answers PNG #2]

Methods to Study Virus Structures

[ worksheet Google Slide ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Icosahedral Virus Capsids

Human DNA Viruses

Human RNA Viruses

This is selection of worksheets relating to DNA, RNA, transcription, translation, genetic crosses, plasmid mapping, etc. See the full collection of genetics worksheets if you’re don’t see what you need.

DNA Replication

Types of Mutations

Monohybrid Cross Worksheet #1

Monohybrid Cross Worksheet #2

Monohybrid Cross Worksheet #3

Monohybrid Cross #4 – Multiple Alleles

• Monohybrid Cross Worksheet #5: Multiple Alleles [ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Monohybrid Cross #6 – Sex-Linked Inheritance

Monohybrid Cross #7 – Sex-Linked Inheritance

Dihybrid Cross Worksheet #1

Dihybrid Cross Worksheet #2

Dihybrid Cross Worksheet #3

Dihybrid Cross Worksheet #4

Dihybrid Cross #5 – Epistasis

Dihybrid Cross #6 – Epistasis

Incomplete Dominance Worksheet #1

Incomplete Dominance Worksheet #2

Natural Selection Worksheet

Convergent vs Divergent Evolution Worksheet

Intro to Pedigrees Worksheet #1

Pedigrees/Genealogy Worksheet #2

Pedigrees/Genealogy Worksheet #3 – X-Linked Dominant Traits

Pedigrees/Genealogy Worksheet #4 – X-Linked Recessive Traits

Pedigrees/Genealogy Worksheet #5 – Autosomal Dominant Traits

Pedigrees/Genealogy Worksheet #6 – Autosomal Recessive Traits

Pedigrees/Genealogy Worksheet #7 – Comprehension Skills

Pedigrees/Genealogy Worksheet #8 – Identifying Inheritance Patterns

Autosomal vs Sex-Linked Inheritance

Plasmid Mapping

• Genotype vs Phenotype [ PNG ]
• Genetic Codon Chart [ PNG ][ PDF ]
• RNA vs DNA [ JPG ]

Use labelled diagrams as study guides.

Ecosystems Worksheet

Levels of Organization (Ecosystem)

Primary Succession

Secondary Succession

Label the Insect

Label the Bee

Chicken Life Cycle (Basic)

Bird Life Cycle (Basic)

Butterfly Life Cycle

• Biotic and Abiotic Factors [ worksheet PDF ][ worksheet Google Apps ][ worksheet PNG ][ answers PNG ]
• Kingdoms of Life Graphic [ PNG ]
• Autotroph vs Heterotroph Graphic [ PNG ]
• Commensalism Definition and Examples [ PNG ]
• Difference Between Butterflies and Moths [ JPG ]
• Difference Between Bugs and Insects [ PNG ]

Parasitology

Schistosome Life Cycle

Schistosome Anatomy

• Giardia Life Cycle [ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Physical Science for Biology

There is also an entire section devoted to physical science worksheets and study guides.

• Adhesion vs Cohesion Graphic [ PNG ]
• What Is Entropy? [ PNG ]
• Freezing Point of Water [ PNG ]

Biology Labs

• How to Extract DNA From a Banana [ PNG ]

Biology Word Search Puzzles

• DNA Replication Word Search
• Gel Electrophoresis Word Search
• Citrus Fruits
• General Biology Word Search Puzzle [ PNG ]
• Life Science Word Search [ PNG ][ PDF ]
• Cell Biology Word Search [ PNG ][ PDF ]
• Amino Acid Word Search [ PNG ][ PDF ]
• Biome Word Search [ PNG ][ PDF ]
• Environmental Science Word Search [ PNG ][ PDF ]
• Photosynthesis Word Search [ PNG ]
• Human Skeleton Bones Word Search [ PNG ]
• Dinosaur Word Search [ PNG ][ PDF ]
• Different Dinosaur Word Search [ PNG ][ PDF ]
• Wild Cats Word Search [ PNG ][ PDF ]
• Shark Word Search [ PNG ]
• Trees Word Search [ PNG ][ PDF ]
• Flowers Word Search [ PNG ][ PDF ]
• Butterfly Word Search [ PNG ][ PDF ]
• Genetics Word Search [ PNG ][ PDF ]

Miscellaneous Biology Notes and Resouces

• How Long Can Germs Live on Surfaces? [ PNG ]
• 10 Radioactive Foods [ PNG ]
• Examples of Organic Compounds [ PNG ]

Biology Notes Terms of Use

You are welcome to print these resources for personal or classroom use. They may be used as handouts or posters. They may  not  be posted elsewhere online, sold, or used on products for sale.

This page doesn’t include all of the assets on the Science Notes site. If there’s a table or worksheet you need but don’t see, just let us know.

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CBSE Worksheets for Class 9 Biology

CBSE Worksheets for Class 9 Biology: One of the best teaching strategies employed in most classrooms today is Worksheets. CBSE Class 9 Biology Worksheet for students has been used by teachers & students to develop logical, lingual, analytical, and problem-solving capabilities. So in order to help you with that, we at WorksheetsBuddy have come up with Kendriya Vidyalaya Class 9 Biology Worksheets for the students of Class 9. All our CBSE NCERT Class 9 Biology practice worksheets are designed for helping students to understand various topics, practice skills and improve their subject knowledge which in turn helps students to improve their academic performance. These chapter wise test papers for Class 9 Biology will be useful to test your conceptual understanding.

Board: Central Board of Secondary Education(www.cbse.nic.in) Subject: Class 9 Biology Number of Worksheets: 39

CBSE Class 9 Biology Worksheets PDF

All the CBSE Worksheets for Class 9 Biology provided in this page are provided for free which can be downloaded by students, teachers as well as by parents. We have covered all the Class 9 Biology important questions and answers in the worksheets which are included in CBSE NCERT Syllabus. Just click on the following link and download the CBSE Class 9 Biology Worksheet. CBSE Worksheets for Class 9 Biology can also use like assignments for Class 9 Biology students.

• CBSE Worksheets for Class 9 Biology Improvement In Food Resources Assignment
• CBSE Worksheets for Class 9 Biology Biology Practicals Assignment
• CBSE Worksheets for Class 9 Biology Cell The unit of life Assignment
• CBSE Worksheets for Class 9 Biology Diversity in Living Organisms Assignment 1
• CBSE Worksheets for Class 9 Biology Diversity in Living Organisms Assignment 2
• CBSE Worksheets for Class 9 Biology Diversity In Living Organisms Assignment 3
• CBSE Worksheets for Class 9 Biology Experiments Assignment
• CBSE Worksheets for Class 9 Biology Food production and management Assignment
• CBSE Worksheets for Class 9 Biology Food Production Assignment
• CBSE Worksheets for Class 9 Biology Fundamental Unit Of Life Assignment
• CBSE Worksheets for Class 9 Biology Natural Resource Assignment 1
• CBSE Worksheets for Class 9 Biology Natural Resources Assignment 2
• CBSE Worksheets for Class 9 Biology Question Bank Assignment 
• CBSE Worksheets for Class 9 Biology SA1 Worksheet Assignment 
• CBSE Worksheets for Class 9 Biology The Fundamental Unit of Life Assignment 1 
• CBSE Worksheets for Class 9 Biology The Fundamental Unit of Life Assignment 2
• CBSE Worksheets for Class 9 Biology The Fundamental Unit of Life Assignment 3
• CBSE Worksheets for Class 9 Biology Tissues Assignment 1
• CBSE Worksheets for Class 9 Biology Tissues Assignment 2
• CBSE Worksheets for Class 9 Biology Whittaker’s Five Kingdoms Assignment
• CBSE Worksheets for Class 9 Biology Why Do We Fall Ill Assignment 1
• CBSE Worksheets for Class 9 Biology Why Do We Fall Ill Assignment 2
• CBSE Worksheets for Class 9 Biology Assignment 1
• CBSE Worksheets for Class 9 Biology Assignment 2
• CBSE Worksheets for Class 9 Biology Assignment 3
• CBSE Worksheets for Class 9 Biology Assignment 4
• CBSE Worksheets for Class 9 Biology Assignment 5
• CBSE Worksheets for Class 9 Biology Assignment 6
• CBSE Worksheets for Class 9 Biology Assignment 7
• CBSE Worksheets for Class 9 Biology Assignment 8
• CBSE Worksheets for Class 9 Biology Assignment 9
• CBSE Worksheets for Class 9 Biology Assignment 10
• CBSE Worksheets for Class 9 Biology Assignment 11
• CBSE Worksheets for Class 9 Biology Assignment 12
• CBSE Worksheets for Class 9 Biology Assignment 13
• CBSE Worksheets for Class 9 Biology Assignment 14
• CBSE Worksheets for Class 9 Biology Assignment 15
• CBSE Worksheets for Class 9 Biology Assignment 16
• CBSE Worksheets for Class 9 Biology Assignment 17

Advantages of CBSE Class 9 Biology Worksheets

• By practising NCERT CBSE Class 9 Biology Worksheet , students can improve their problem solving skills.
• Helps to develop the subject knowledge in a simple, fun and interactive way.
• No need for tuition or attend extra classes if students practise on worksheets daily.
• Working on CBSE worksheets are time-saving.
• Helps students to promote hands-on learning.
• One of the helpful resources used in classroom revision.
• CBSE Class 9 Biology Workbook Helps to improve subject-knowledge.
• CBSE Class 9 Biology Worksheets encourages classroom activities.

Worksheets of CBSE Class 9 Biology are devised by experts of WorksheetsBuddy experts who have great experience and expertise in teaching Maths. So practising these worksheets will promote students problem-solving skills and subject knowledge in an interactive method. Students can also download CBSE Class 9 Biology Chapter wise question bank pdf and access it anytime, anywhere for free. Browse further to download free CBSE Class 9 Biology Worksheets PDF .

Now that you are provided all the necessary information regarding CBSE Class 9 Biology Worksheet and we hope this detailed article is helpful. So Students who are preparing for the exams must need to have great solving skills. And in order to have these skills, one must practice enough of Class 9 Biology revision worksheets . And more importantly, students should need to follow through the worksheets after completing their syllabus.  Working on CBSE Class 9 Biology Worksheets will be a great help to secure good marks in the examination. So start working on Class 9 Biology Worksheets to secure good score.

CBSE Worksheets For Class 9

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Worksheet For class 9

• CBSE Worksheet for class 9 science Biology

CBSE Worksheet for chapter-1 Cell : The Fundamental Unit of Life class 9

• Active page

Find CBSE Worksheet for chapter-1 Cell : The Fundamental Unit of Life class 9

BOARD: CBSE

BIOLOGY Worksheet - 1

TOPIC: Cell : The Fundamental Unit of Life

For other CBSE Worksheet for class 9 Science check out main page of Physics Wallah. 

Read the free pdf of the CBSE Class 9 Science Fundamental Unit Of Life Worksheet. Students and teachers of Class 9 Science can get printable worksheets for class 9 science in the latest syllabus PDF format and test pattern from Physics Wallah. Class 9 students should practice the questions and answers provided here in Science Grade 9, which will help them to develop their knowledge of all the important chapters and topics.

Students should also download a free pdf of Class 9 Science Worksheets prepared for school teachers according to the latest NCERT textbooks, CBSE released this academic year, and solve the syllabus issues provided here with daily solutions to get more marks in the exams.

Class 9 Science students should refer to this Physics Wallah worksheet in the Fundamental Unit Of Life Pdf. This class 9 worksheet question paper with answers will benefit exams and help you get good marks. For other CBSE Worksheet for class 9 Science check out main page of Physics Wallah.

Objective Questions

• Muscle cell
• Kidney cell
• Show plasmolysis
• No change in shape or size
• a single cell
• a chromosome

Subjective Questions

• What is osmosis?
• What is a cell theory? Who propounded it and when?
• ‘Cell is the structural and functional unit of life’. Explain.
• How do substances like CO 2 and water move in and out of the cell? Discuss.
• Give the difference between prokaryotic cell and eukaryotic cell?
• How does an Amoeba obtain its food?
• Describe the levels of organization in living organisms.

Related Link

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• RS Aggarwal Solutions Class-9
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• Lakhmir Singh Solutions Physics
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• Important Question Class-9 Maths
• Important Question Class-9 Science
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NCERT Solutions for Class 9 Biology Free PDF Download

Ncert solutions for class 9 biology.

NCERT is on the priority list of recommendation of the Central Board of Secondary Education (CBSE). Here, you will find all the chapter-wise NCERT Solutions for Class 9 Biology. It will help you to understand the subject and perform well in exams.

Biology along with having a good weight in exams is equally important from experiment and practical point of view. In order to understand the chapters in biology, NCERT solutions play an important role. Here, on Toppr.com, you will find high quality of NCERT solutions prepared by a special team of experts. Moreover, the team is available to clear your doubts.

Download NCERT Solutions for other subjects here . All the NCERT Solutions will be updated soon.

Toppr app provides free video lectures, study materials, and 10 years of question papers for free. Download Toppr app for Android and iOS or signup for free .

NCERT Solutions for Class 9 Biology Chapterwise

Class 9 Biology Chapter 1 Fundamental Units of Life

Class 9 Biology Chapter 2 Improvement in Food Resources

Class 9 Biology Chapter 3 Diversity in Living Organisms

Class 9 Biology Chapter 4 Why do we fall ill?

Class 9 Biology Chapter 5 Natural Resources

Class 9 Biology Chapter 6 Tissues

Class 9 Biology NCERT Solutions Chapterwise

Ncert solutions for class 9 biology chapter 1 fundamental units of life.

Robert Hooke was the first person to prepare a microscope and see a cell. A cell is the basic fundamental unit of life. In this chapter, students will learn the structures and functions of different cells. Moreover, the effect of hypotonic, isotonic, and hypertonic solutions on a cell. Download NCERT Solutions for  Fundamental Units of Life here .

NCERT Solutions for Class 9 Biology Chapter 2 Tissues

This chapter helps the students to learn about the various types of Tissues in Plants like Merismatic Tissue and Permanent tissue. Moreover, in the end, the chapter highlights topics like Position of plant tissues, a section of a stem, guard cells, etc. Download NCERT Solutions for Tissues here .

NCERT Solutions for Class 9 Biology Chapter 3 Diversity in Living Organisms

There are various life forms on this planet and it becomes very essential to study all of them. In chapter helps students to know about the various groups of organisms. Aristotle has done the classification of animals on the basis of land, air, and water, etc. There are certain terms related to the classification which the students will confront are Kingdom, Phylum, Class, Order, Family, Genus, Species, etc. Download NCERT Solutions for Diversity in Living Organisms here .

NCERT Solutions for Class 9 Biology Chapter 4 Why do we fall ill?

Health and Diseases are the two most important topics of discussion in this present world. This chapter highlights Health and its significance, reasons why do we fall ill, etc. Along with this, this chapter discusses the distinction between a healthy person and disease-free person. Download NCERT Solutions for Why do we fall ill here .

NCERT Solutions for Class 9 Biology Chapter 5 Natural Resources

This chapter highlights the most important element of life: Air. Starting with the role of the atmosphere in climatic control, this chapter deals with topics like how air moves, winds, rain, and air pollution. While discussing the topic of Air pollution, the chapter states various pollutants of the same. Moreover, in the end, the chapter, states various solutions to the problem. Download NCERT Solutions for Natural Resources here .

NCERT Solutions for Class 9 Biology Chapter 6 Improvement in Food Resources

This chapter deals with concepts like Crop Yield. Along with that, the chapter discusses the improvement in Crop Yield and related topics. Improvement in livestock and food crops are also discussed. The chapter also discusses topics like the ways to improve crop yield, crop production improvement, etc. Download NCERT Solutions for Improvement in Food Resources here .

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Solved Questions For You:

Question 1. A baby is not able to tell her/his caretakers that she/he is sick. What would help us to find out?

(a) That the baby is sick? (b) What is the sickness?

Question 2. Under which of the following conditions is a person most likely to fall sick?

(a) When she is recovering from malaria. (b) When she has recovered from malaria and is taking care of someone suffering from chicken-pox. (c) When she is on a four-day fast after recovering from malaria and is taking care of someone suffering from chicken-pox. Why?

Answer: A person is more likely to fall sick when she is on a four-day fast after recovering from malaria and is taking care of someone suffering from chickenpox. This is because since she has suffered from malaria and is in the recovery phase, it means that she is still not completely diseases-free. Fasting affects the immune system as the body is deprived of essential nutrients required to maintain a healthy body. Chickenpox is a contagious disease, this also makes her susceptible to contracting the disease while taking care of a person suffering from chickenpox.

Question 3. A doctor/nurse/health-worker is exposed to more sick people than others in the community. Find out how she/he avoids getting sick herself/himself.

Answer:  Medical personnel are constantly in contact with the sick and diseased people coming in the hospitals for the treatment. They follow various measures in order to prevent themselves from getting infected:

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NCERT Solutions for Class 9

• NCERT Solutions for Class 9 History Chapter 3 Free PDF Download
• NCERT Solutions for Class 9 History Chapter 6 Free PDF Download
• NCERT Solutions for Class 9 Maths Chapter 15 Free PDF Download
• NCERT Solutions for Class 9 Maths Chapter 7 Free PDF Download
• NCERT Solutions for Class 9 Maths Chapter 14 Free PDF Download
• NCERT Solutions for Class 9 Maths Chapter 12 Free PDF Download
• NCERT Solutions for Class 9 Maths Chapter 1 Free PDF Download
• NCERT Solutions for Class 9 Maths Chapter 9 Free PDF Download
• NCERT Solutions for Class 9 Maths Chapter 4 Free PDF Download
• NCERT Solutions for Class 9 Maths Chapter 11 Free PDF Download

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Free Printable Biology Worksheets for 9th Grade

Biology worksheets for Grade 9 Science teachers: Discover a vast collection of free printable resources to help students explore the fascinating world of biology. Dive into topics like genetics, cells, and ecosystems with Quizizz's comprehensive worksheets.

Recommended Topics for you

• animal adaptations
• genetic variation
• punnett squares
• biodiversity and conservation
• inherited and acquired traits
• human biology
• natural selection
• the circulatory and respiratory systems
• plant and animal cell
• genetic mutation
• the cell cycle and mitosis
• cellular respiration
• rna and protein synthesis
• living and non living things
• membranes and transport
• history of life on earth
• biotechnology
• photosynthesis
• the immune system
• osmosis and tonicity
• the digestive and excretory systems
• macromolecules
• non mendelian inheritance
• the nervous and endocrine systems
• bacteria and archaea
• structure of a cell
• genetics vocabulary genotype and phenotype
• plant parts and their functions
• plant biology
• introduction to heredity
• plant cell diagram
• vertebrates and invertebrates
• the cell membrane
• prokaryotes and eukaryotes
• properties of carbon
• the reproductive system
• dna structure and replication
• evolution and the tree of life
• developmental biology
• chromosome structure and numbers
• genetics vocabulary dominant and recessive
• types of reproduction
• behavioral biology
• gene regulation
• cell division

Explore Biology Worksheets by Grades

Explore biology worksheets for grade 9 by topic, explore other subject worksheets for grade 9.

• social studies

Explore printable Biology worksheets for 9th Grade

Biology worksheets for Grade 9 are an essential resource for teachers looking to engage their students in the fascinating world of science. These worksheets provide a comprehensive and structured approach to learning various topics in biology, such as cell structure, genetics, evolution, and ecology. By incorporating these worksheets into their lesson plans, teachers can ensure that their students gain a thorough understanding of the subject matter while also developing critical thinking and problem-solving skills. Furthermore, these worksheets are designed to be easily customizable, allowing teachers to tailor them to the specific needs of their students. With a wide variety of activities, exercises, and assessments, Grade 9 biology worksheets are an invaluable tool for any science educator looking to enhance their students' learning experience.

In addition to Biology worksheets for Grade 9, Science teachers can also benefit from using Quizizz, an interactive platform that offers a diverse range of educational resources. Quizizz allows educators to create engaging quizzes, polls, and presentations that can be easily integrated into their lesson plans. This platform not only offers a vast library of pre-made quizzes and worksheets, but also enables teachers to create their own content, ensuring that their students receive a personalized and targeted learning experience. Furthermore, Quizizz provides real-time feedback and analytics, allowing teachers to monitor their students' progress and identify areas where additional support may be needed. By incorporating Quizizz into their teaching strategies, educators can enhance their students' understanding of biology and other scientific concepts, while also fostering a fun and interactive learning environment.

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Class 9 Biology Worksheets

We have provided below free printable  Class 9 Biology Worksheets  for Download in PDF. The worksheets have been designed based on the latest  NCERT Book for Class 9 Biology . These  Worksheets for Grade 9 Biology  cover all important topics which can come in your standard 9 tests and examinations.  Free printable worksheets for CBSE Class 9 Biology , school and class assignments, and practice test papers have been designed by our highly experienced class 9 faculty. You can free download CBSE NCERT printable worksheets for Biology Class 9 with solutions and answers. All worksheets and test sheets have been prepared by expert teachers as per the latest Syllabus in Biology Class 9. Students can click on the links below and download all Pdf  worksheets for Biology class 9  for free. All latest Kendriya Vidyalaya  Class Biology Worksheets  with Answers and test papers are given below.

Biology Class 9 Worksheets Pdf Download

Here we have the biggest database of free  CBSE NCERT KVS  Worksheets for Class 9  Biology . You can download all free Biology worksheets in Pdf for standard 9th. Our teachers have covered  Class 9 important questions and answers for Biology as per the latest curriculum for the current academic year. All test sheets question banks for Class 9 Biology CBSE Worksheets for Biology Class 9  will be really useful for Class 9 students to properly prepare for the upcoming tests and examinations. Class 9th students are advised to free download in Pdf all printable workbooks given below.

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• CBSE Notes For Class 9
• Class 9 Science Notes
• Chapter 5: The Fundamental Unit Of Life

The Fundamental Unit Of Life Class 9 CBSE Notes - Chapter 5

Cbse class 9 science notes chapter 5 the fundamental unit of life, for more information on the fundamental unit of life – cell, watch the below video.

All About Cells

Cells are the basic structural and functional unit of life. The cell was discovered by Robert Hooke. A number of cells can work together to form tissues and organs.

For more information on Introduction to the World of Cells, watch the below video

To know more about Cell, visit here .

Cellular Respiration

Cellular respiration is the process by which food releases energy in the mitochondria. Cells absorb glucose from food and burn it to produce energy.

To know more about Cellular respiration, visit here .

Structural Organization of Cells

Prokaryotic & eukaryotic cells.

Two types of cells – Prokaryotic and Eukaryotic cells. Prokaryotic cells are primitive and lack a well-defined nucleus. Eukaryotic cells are more advanced and have a well-defined nucleus.

To know more about Prokaryotic & Eukaryotic Cells, visit here .

Cell Structure in Eukaryotic Cells

Eukaryotic cells have the most well-defined structure. These cells have cell membranes, membrane-bound cell organelles and a well-defined nucleus. The nucleus has its own membrane called the nuclear membrane.

For more information on Prokaryotic and Eukaryotic Cells, watch the below video

Cell Membrane

• The cell membrane is the outer covering of a cell.
• It is made up of a phospholipid bilayer membrane.
• It is selectively permeable in nature.
• The structure of a cell membrane is best described by the fluid mosaic model.

To know more about Cell Wall and Cell Membrane, visit here .

The movement of molecules from a region of high concentration to a region of lower concentration is known as diffusion. E.g. carbon dioxide and oxygen move across the cell membrane by diffusion.

Osmosis in Selectively Permeable Membrane

Osmosis is the movement of water across a semi-permeable membrane. Osmosis is a selective process since the membrane does not allow all molecules to pass through it. Water is usually the only free-flowing molecule across this membrane.

To know more about Diffusion and Osmosis, visit here .

Isotonic, Hypotonic, and Hypertonic Solutions

• Isotonic solutions are those which have the same solute and pH concentration as the surrounding body fluid or the cytoplasm.
• Hypotonic solutions contain a lesser amount of solute concentration compared to the surrounding fluid and can force the cell to rupture due to excess input of water into the cell.
• Hypertonic solutions contain a higher concentration of solute compared to the surrounding fluid and thus push water out of the cell, shrinking it.

Cell Walls in Plants

Plant cells are different from animal cells due to the presence of a cell wall. The cell wall is made of cellulose and gives a rigid structure to the plant cell.  It provides structural support to plants. Due to cell walls, cells of plants, fungi and bacteria can withstand greater changes in surrounding conditions than animal cells. E.g. Cell wall enables the cells to withstand hypotonic solution without bursting.

Cell Organelles

Eukaryotic cells contain various membrane-bound organelles that carry out various functions in the cell, e.g. Nucleus, Endoplasmic reticulum, Golgi apparatus, Lysosomes, etc.

Read more: Cell Organelles – Structure and Functions

Endocytosis

Endocytosis is the invagination of the cell membrane, followed by pinching off, forming a membrane-bound vesicle. This is commonly seen in Amoeba.

Also read: Endocytosis vs Exocytosis

Nucleus in Cells

The nucleus is the processing unit of the cell. It is a double membrane-bound organelle which contains the genetic material for inheritance. The nuclear membrane contains pores that allow the transfer of materials from the nucleus to the cytoplasm. The nucleus is the brain of the cell as it controls various functions such as cell division, reproduction, inheritance, etc. The nucleus contains genetic material, i.e. chromosomes that contain DNA. DNA carries information for inheritance from parents to offspring. Prokaryotes lack a well-defined nucleus , and the genetic material is present in a region known as the nucleoid.

Chromosomes

Chromosomes are the genetic material present in the nucleus. It contains DNA with associated proteins. They are present as threads called chromatin.  During the growth phase of the cell, the chromatin condenses into a much thicker structure called a chromosome . Human cells contain 23 pairs of chromosomes (46).

Chromatin is a thread-like structure which serves as the genetic material present inside the nucleus of the cell. It is made up of DNA and protein molecules. DNA contains the hereditary information needed for the structure and function of the organism.

Read more: Chromatin

The cytoplasm is the fluid found inside the cell. It gives the structure to the cell and houses different organelles of the cell.

Know more: Cytoplasm Structure and Function

Organelles are structures present in the cytoplasm of the cell that helps in several functions of the cell.

Endoplasmic Reticulum

The endoplasmic reticulum is a membrane-bound cell organelle that plays an integral role in the interpretation of the genetic information present in the nucleus.

Rough ER is the one that has ribosomes on them. The ribosome is made up of nucleic acids and proteins. They are the site of protein synthesis. The Rough ER is also involved in the modification and folding of proteins.

Smooth ER does not have ribosomes and thus is not involved in protein synthesis. They are, however, involved in lipid metabolism and detoxifying of poisonous molecules.

Read more: Endoplasmic Reticulum

Golgi Apparatus

Golgi Apparatus is also called the post office of the cell. They package and transport the proteins across the cytoplasm.

Also read: Golgi Apparatus

They are referred to as suicide bags of the cell as they contain potent enzymes that can digest a cell. Lysosomes also help in defence by attacking a foreign object.

Mitochondria

Mitochondria are also called the powerhouse of a cell. They generate ATP via the electron transport chain. They also have a DNA called mtDNA, which makes them a semi-autonomous organelle. Mitochondria can make their own proteins.

There are various types of plastids in different cells based on the pigment they contain. The chloroplast is the plastid where photosynthesis occurs, they contain chlorophyll. Some of the other plastids are leucoplast and chromoplast. Leucoplasts store starch, oil and protein granules. Chloroplasts contain membranes known as thylakoids embedded in the stroma. Plastids also contain their own DNA and ribosomes.

Vacuoles are large vesicles that hold water or air in them and give structural rigidity to the cell. Vacuoles are common in plant cells. In animals, the vacuoles are either very small or absent.

To know more about Cell Organelles, visit here .

Comparison between Plant and Animal Cells

Plants cells are different from animal cells structurally. Plant cells have cell walls and chloroplast which are missing in animal cells. Plants cells also have large vacuoles, which are either very small or missing in animal cells. The nucleus is present at the centre of the cell in animal cells and at the periphery in plant cells.

To know more comparisons between Plant & Animal Cells, visit here .

Questions from The Fundamental Unit Of Life Class 9 Notes

• How does a plant cell differ from an animal cell?
• Differentiate between a eukaryotic cell and a prokaryotic cell.
• What would be the outcome in a scenario where a rupture occurs in the plasma membrane?
• Define osmosis.
• How does an amoeba acquire food?
• Growth and repair require which type of cell division?

Further Reading:-

Frequently Asked Questions on CBSE Class 9 Biology Notes Chapter 5 Fundamental Unit of Life

What is a ‘homogenous’ mixture.

A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture.

What is an ‘isotonic’ medium?

A solution is isotonic when its effective mole concentration is the same as that of another solution.

What is a ‘vacuole’?

A vacuole is a membrane-bound cell organelle. In animal cells, vacuoles are generally small and help sequester waste products. In the plant cells, vacuoles help maintain water balance.

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