What Are Important Diagrams For Class 12 Biology Board Exam?

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Drawing a neat and labeled diagram can fetch some marks in board exams. Using a diagram is more effective and communicates the information. A picture can say more. Here are few important diagrams for Class 12 board exams to prepare.

Human Digestive system

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The digestive system is designed to turn the food you eat into nutrients, which the body uses for energy, growth and cell repair. Here's how it works.

Human Respiratory system

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In this image, it focuses on the primary function of the respiratory system.

Schematic representation of transport & exchange of oxygen & carbon dioxide in human body

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The function of the respiratory system is to exchange oxygen and carbon-di-oxide.

Human excretory system

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The function of the excretory system is to remove waste from the human body.

Human Heart And Functioning

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Get to know the anatomy of the human heart.

Human Brain

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Human brain structure and its functions.

Nervous System

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The nervous system controls and coordinates all essential functions of the human body.

Sex Determination In Humans

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Is the process of development of sex differences in humans.

Neuron Diagram

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Neurons are specialized cells of the nervous system that transmit signals throughout the body.

Binary Fission In Amoeba

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How does the amoeba perform binary fission? 

Nephron of kidney

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A nephron is the functional unit of the kidney. Know about the nephron anatomy of kidney & its functions.

Microscopic Structure Of A Human Sperm

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This diagram focus on sperm cell function and its structure.

Ozone layer formation

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How is ozone formed and the function of the ozone layer?

Food chain

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A food chain shows how this energy flow occurs as energy is neither created or destroyed, but it can be passed from one organism to another.

Sexual Reproduction In Floweing Plants

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How does a flower reproduce sexually? This image depicts sexual reproduction in flowering plants.


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The study of genes is genetic. Every child inherits genes from both of their biological parents and these genes, in turn, express specific traits.

Also Read: How Can Class 12 Students Start Preparing for Board Exams?


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