Biology is the branch of science that deals with life and living organisms. The main objective of Biology is to understand the various processes taking place inside any living organism. It includes the formation of cells, composition of cells and formation of tissues. It also reflects on the changes occurring in human body. It depicts how the living and non living components interact with each other.

Here we will cover the various topics regarding Biology for Class 9. The concepts that are mastered in the lower classes help us to crack many entrance examinations like NEET, AIIMS, AIPMT, UPSC etc. At ABHYASONLINE.IN you can master the concepts at your own learning pace. It provides conceptual testing with analytical reports identifying the weak, moderate and strong concepts. We, at ABHYASONLINE.IN believe that, if the weak concepts are timely identified and improved, then every student can achieve their goals in life. Follow the links below to understand and master each and every concept of various topics in Biology along with video lectures.

Explore Chapters

Chapter 1: Importance of Bacteria And Fungi

 

Explore Concepts (Click & View)

- Bacteria in Micro Organism

- Fungi in Micro Organism

- Commercial Use

- Medicinal Use

- Agricultural Use

- Environmental Use

---

Chapter 2: Waste Generation And Management

 

The Environment means the physical and biological conditions in which a person lives. The interaction between organism is known as ecosystem. In this section of Our Environment Biodegradable and Non-Biodegradable materials, Biological Magnification, CFCs and the Ozone Hole, Human-generated Waste, Humans Affect the Environment, Management of Garbage and Sewage, etc., have been explained. Watch the videos and master the concepts

 

Explore Concepts (Click & View)

- Human-generated Waste

- Domestic Waste

- Industrial Waste

- Agricultural Waste

- Biodegradable and Non-Biodegradable Materials -

- e - Waste

- Management of Garbage and Sewage

- Segregation of Waste

- Dumping

- Composting-Biodegradable

- Drainage

- Incineration

- Sewage Treatment

---

Chapter 3: Aids To Health

 

In 19th Century man realized that his way of living and the environment around him affected his health and by controlling these factors he could prevent certain diseases In this section of Why Do We Fall Ill  AIDS, Antibiotics, Cholera, Control of Vectors, Diarrhoea, General Prevention of Infectious Diseases, Hepatitis, Immunization, Influenza, Jaundice, Malaria, Prevention is better Than Cure, Prevention of Infectious Diseases, Proper Disposal of Waste, Rabies, Safe Drinking Water, Strong Immune System, Tuberculosis, Typhoid ,etc. have been explained. Watch the videos and master the concepts

 

Explore Concepts (Click & View)

- Immunization

- Immunity And Types

- Fighting Viruses

- Antiviral Drugs

- Nanomedicines

- Antitoxin

- Antiseptics and Disinfectants

- Antibiotics

- Serum

- Local Defence System

- Health Organisation

---

Chapter 4: Infectious Disease

 

In 19th Century man realized that his way of living and the environment around him affected his health and by controlling these factors he could prevent certain diseases In this section of Why Do We Fall Ill  Acute and Chronic Diseases, Balanced Diet, Basic Conditions of Good Health, Causes of Diseases, Clean Air, Clean Food and Water, Clean Surroundings, Diseases, Eliminating Infectious Agents, Exercise and Relaxation, Good Economic Conditions, Good Health, Infectious Diseases, No Addiction, Personal Hygiene, Signs and Symptoms of a Disease, Spreading of Communicable Disease, Spreading of Communicable Disease Through Air, Through Body Fluids,etc. have been explained. Watch the videos and master the concepts

 

Explore Concepts (Click & View)

- Infectious Diseases

- Signs and Symptoms of a Disease

- Bacterial Diseases

- Cholera

- Typhoid

- Tuberculosis

- Tetanus

- Viral diseases

- AIDS

- Chickenpox

- Hepatitis

- Influenza

- Rabies -

- Protozoa in Micro Organism

- Protozoan diseases

- Malaria

- Amoebic Dysentery

- Measles

- Diarrhoea -

- Jaundice -

- Helminthic diseases

- Ascariasis

- Filiariasis

- Taeniasis

---

Chapter 5: Skin And Its Functions

 

All living organisms breathe. This process is known as respiration. Respiration involves the use of oxygen to break down carbohydrates and other organic molecules, giving usable energy In this section of Life Process Respiration Diaphragm, Different Animals with their Respiratory Surfaces, Mechanism of Breathing Inspiration and Expiration, Nasal Cavity, Pharynx and Larynx, Respiration among Plants, Respiration in Amoeba and Paramoecium, Respiration in Aquatic Animals, Respiration in Human Beings, Respiration in Organisms, Respiration in Terrestial Animals, etc., have been explained. Watch the videos and master the concepts

 

Explore Concepts (Click & View)

- Parts of Skin

- Special Derivatives of the Skin

- Heat Regulation

- Functions of Skin

- Structure of Skin

---

Chapter 6: Human Body - Respiratory System

 

All living organisms breathe. This process is known as respiration. Respiration involves the use of oxygen to break down carbohydrates and other organic molecules, giving usable energy In this section of Life Process Respiration Aerobic Respiration, Anaerobic Respiration, Anaerobic Respiration Alcoholic Fermentation, Anaerobic Respiration Lactic Acid Fermentation, Breathing, Difference between Aerobic and Anaerobic Respiration, Difference between Respiration and Breathing, Adenosine Tri Phosphate ATP, Gaseous Exchange, Oxidation of Food and Respiration, Respiratory Substrate, etc., have been explained. Watch the videos and master the concepts

 

Explore Concepts (Click & View)

- Respiration in Human Beings

- Nasal Cavity

- Windpipe and Lungs

- Diaphragm

- Pharynx and Larynx

- Mechanism of Breathing Inspiration and Expiration

- Transport of Gases

- Gaseous Exchange

- Respiratory Substrate

- Oxidation of Food and Respiration

- Anaerobic Respiration

- Anaerobic Respiration Lactic Acid Fermentation

- Anaerobic Respiration Alcoholic Fermentation

- Anaerobic Respiration in Plants And Humans

- Respiratory Volumes and Capacities

---

Chapter 7: Skeleton - Movement and Locomotion

 

Explore Concepts (Click & View)

- Organization And Structure Of The Body

- Functions of The Skeleton

- Structure Of The Human Skeleton

- Joints And Movement

- Movement and Locomotion

- Skull and Backbone

- Ribcage and Shoulder Bone

- Pelvic Bones

- Movement in Earthworm

- Movement in Fish, Snake and Bird

- Movement in Snail and Cockroach

- Muscles

- Limbs - Arms and Legs

---

Chapter 8: Human Body - Digestive System

 

Nutrition provides nutrients to the body so that energy can be formed which can be used to carry out various activities. Nutrition helps in synthesizing a variety of substances such as proteins carbohydrates etc., In this section of Life Process Nutrition Alimentary Canal, Autotrophic Nutrition, Cross Section of a Leaf, Digestive Glands, Photosynthesis, Heterotrophic Nutrition, Holozoic Nutrition, Human Digestive System, Large Intestine, Liver, Mechanism of Food Digestion, Nutrition in Amoeba, Nutrition in Paramoecium, Oesophagus,  Pancreas, Parasites, Peristatic Movement, Pharynx, etc., have been explained. Watch the videos and master the concepts

 

Explore Concepts (Click & View)

- Human Digestive System

- Alimentary Canal

- Digestive Glands

- Mouth Tongue Teeth and Tooth Decay

- Oesophagus

- Stomach

- Small Intestine

- Large Intestine

- Liver

- Pancreas

- Mechanism of Food Digestion

---

Chapter 9: Nutrition

 

Explore Concepts (Click & View)

- Balanced Diet and Nutrients

- Components of Food

- Carbohydrates

- Fats

- Proteins

- Vitamins

- Minerals in Food

- Fibre and Roughage

- Deficiency Diseases

- Deficiency of Minerals

- Deficiency of Protein and Carbohydrates

- Deficiency of Vitamins

---

Chapter 10: Basic Biology - Cell

 

A Cell is the structural and functional unit of life. Cell is a building block with which all living organism are made, Cell is the smallest unit of life. The various topics that you will find in the links below are cell, how cell was discovered , structure of cell, functions of cell. We have discussed about the type of organism i.e. unicellular and multicellular, cell wall, plasma membrane, cell organelles and many more interesting topics

 

Explore Concepts (Click & View)

- Cell Theory

- Plant Cell and Animal Cell

- Cell Organelle

- Protoplasm

- Cytoplasm

- Cell Wall

- Plasma Membrane or Cell Membrane

- Function of Nucleus

- Nucleolus

- Mitochondria

- Endoplasmic Reticulum

- Ribosomes

- Golgi body

- Plastids

- Lysosomes

- Centrosome and Centrioles

- Vacuoles

- Difference between Prokaryotic and Eukaryotic Cells

---

Chapter 11: Health And Hygiene

 

Explore Concepts (Click & View)

- Good Health

- Personal Hygiene

- Clean Surroundings

- Exercise and Relaxation

- Spreading of Communicable Disease

- Spreading of Communicable Disease Through Food and Water

- Spreading of Communicable Disease Through Air

- Spreading of Communicable Disease Through Body Fluids

- Spreading of Communicable Disease Through Contact

- Spreading of Communicable Disease Through Vectors

---

Chapter 12: Diversity in Living Organism II

 

The biological world consists of many diverse species. There are so many varieties that it is almost impossible to study all of them in a single life span. Organisms have been grouped together on the basis of their features .In this section of diversity of living organism Bacteria, Phylum Annelida, Phylum Arthropoda, Phylum Aschelminthes- Nematoda, Phylum Cnidaria Coelenterata, Phylum Platyhelminthes, Phylum Porifera, Viruses etc. have been explained. Watch the videos and master the concepts

 

Explore Concepts (Click & View)

- Phylum Porifera

- Phylum Cnidaria Coelenterata

- Phylum Platyhelminthes

- Phylum Aschelminthes- Nematoda -

- Phylum Annelida

- Phylum Arthropoda

- Phylum Echinodermata -

- Phylum Chordata

- Class Chondrichthyes

- Class Osteichthyes -

- Class Amphibia

- Class Reptilia

- Class Aves

- Class Mammalia

Sample Test(s)

Test Name

Subject(s)

Topics / Chapters

Questions / Marks

Action

Tutorial - 9th - Biology [Diversity in Living Organism II]

Biology

Diversity in Living Organism II

10 / 10

Click to Attempt Test

View All FREE Test(s)

---

Chapter 13: Diversity in Living Organism I

 

The biological world consists of many diverse species. There are so many varieties that it is almost impossible to study all of them in a single life span. Organisms have been grouped together on the basis of their features .In this section of diversity of living organism Classification, Classification depending on evolution, Taxonomic hierarchy, Taxonomy, Algae, Angiosperms, Animalia, Bryophyta, Charles Darwin, Fungi, Gymnosperms, Hornworts, Liverworts, Monera, Monocotyledons and Dicotyledons, Mosses, Plantae, Protista, Pteridophyte etc. have been explained. Watch the videos and master the concepts

 

Explore Concepts (Click & View)

- Systems of Classification and Evolution

- Monera

- Protista

- Fungi

- Plantae

- Animalia

- Thallophyta

- Bryophyta

- Pteridophyta

- Gymnosperms

- Angiosperms

Sample Test(s)

Test Name

Subject(s)

Topics / Chapters

Questions / Marks

Action

Tutorial - 9th - Biology [Diversity in Living Organism I]

Biology

Diversity in Living Organism I

10 / 10

Click to Attempt Test

View All FREE Test(s)

---

Chapter 14: Plant Physiology - Seeds

 

Explore Concepts (Click & View)

- Structure of Seed

- Germination of Seed

- Beans And Maize Seed

- Monocotyledons and Dicotyledons

- Types of Germination

- Conditions For Seed Germination

- Seed Dispersal

---

Chapter 15: Flowering Plants

 

Reproduction is an attribute of a living organism through which it is able to produce more of its kind. In this section of Reproduction Changes After Fertilization, Changes in Human Body, Contraception, Family Planning, Female Reproductive System, Fertilization, Human Reproductive System, Male Reproductive System, Parts of Flower, Pollination, Reproductive Health, Sexual Reproduction, Sexual Reproduction in Flowering Plants, Sexually Transmitted Diseases, etc. have been explained. Watch the videos and master the concepts

 

Explore Concepts (Click & View)

- Parts of Flower

- Inflorescence

- Placentation

- Pollination

- Fertilization

- Double Fertilisation and Triple Fussion

- Flower Fruit and Seed

---

Chapter 16: Basic Biology - Tissue II

 

In biology, a tissue is defined as a group of cells with similar structure, organized to do a common function. A tissue is a group of similar cells and their extracellular matrix to carry out a specific function. Organs are then formed by the functional grouping of multiple tissues. In this section topics of Animal Tissue like Blood as Fluid Connective Tissue, Cardiac Muscles, Connective tissue, Epithelial tissue, Fluid Connective Tissue, Lymph as Fluid Connective Tissue, Muscular tissue, Nervous tissue, Skeletal Connective Tissue

 

Explore Concepts (Click & View)

- Epithelial tissue

- Connective tissue

- Skeletal Connective Tissue

- Fluid Connective Tissue

- Blood as Fluid Connective Tissue

- Lymph as Fluid Connective Tissue

- Muscular tissue -

- Cardiac Muscles

- Nervous tissue

---

Chapter 17: Basic Biology - Tissue I

 

In biology, a tissue is defined as a group of cells with similar structure, organized to do a common function. A tissue is a group of similar cells and their extracellular matrix to carry out a specific function. Organs are then formed by the functional grouping of multiple tissues. In this section topics of Plant Tissue such as Permanent Tissue, Parenchyma, Collenchyma, Sclerenchyma,  Epidermis, Phloem Xylem, etc. have been explained. Watch the videos and master the concepts

 

Explore Concepts (Click & View)

- Unicellular and Multicellular

- Organization of the animal body

- Meristematic Tissue

- Permanent Tissue

- Parenchyma -

- Collenchyma

- Sclerenchyma

- Epidermis

- Xylem -

- Phloem

- Special Tissues

---

Chapter 18: Plant Physiology - Respiration

 

A Cell is the structural and functional unit of life. Cell is a building block with which all living organism are made, Cell is the smallest unit of life In this section Topics such as protoplasm, cytoplasm, Endoplasmic reticulum, Ribosomes, Mitochondria, Golgi body, Plastids, Lysosomes, Centrioles, Cytoskeleton, Vacuoles, Nucleus, Chromosomes, Plant Cell, Animal Cell, etc. have been explained. Watch the videos and master the concepts

 

Explore Concepts (Click & View)

- Aerobic Respiration

- Difference between Aerobic and Anaerobic Respiration

- Gaseous Exchange In Plants

- Anaerobic Respiration in Plants

---