Chapter-wise most important science (Biology) questions for Board Exam

The best way to escape the exam fear is “Practice“. Practice all the questions given below for biology will you solve all the questions that will appear in CBSE Board Exam of Science.

Life Process

Short Notes and Board Exams Questions: Life Processes

VERY SHORT QUESTIONS (1 Mark)

1. State one difference between autotrophic and hetrotrophic mode of nutrition.
2. Define peristaltic movement.
3. What is the role of saliva in the digestion of food ?
4. Name the tissue that transports water and minerals in plants.
5. What is the role of acid in our stomach ?
6. What is emulsification ?
7. Name the cell organelle in which photosynthesis occur.
8. Name the largest artery in the human body.
9. Define transpiration.
10. What is the structural and functional unit of kidney called ?

SHORT ANSWER TYPE QUESTIONS (2 Marks)

1. How is small intestine designed to absorb digested food ?
2. What are stomata ? Draw a labeled diagram of stomata.
3. Write the equation for the process of breakdown of glucose in a cell :
(a) in the presence of oxygen.
(b) in the absence of oxygen.
4. Write the differences between inhalation and exhalation.
5. List the three events which occur during photosynthesis.
6. How does transpiration help in upward transport of substances.
7. Write the functions of the components of blood.
8. Why is small intestine longer in herbivores than in carnivores ?
9. Explain the cause of cramps after excessive physical exercise.
10. Why is the rate of breathing in aquatic organisms much faster than that seen in terrestrial organisms.

SHORT ANSWER TYPE QUESTIONS (3 Marks)

1. Describe the process of double circulation in human beings.
2. What are the methods used by plants to get rid of their waste products ?
3. Give reason for the following :
(a) Arteries are thick walled blood vessels.
(b) Veins are thin walled blood vessels.
(c) Veins have valves in them.

LONG ANSWER TYPE QUESTIONS (5 Marks)

1. If you chew chapatti for long, after some time it taste sweet ? Why is this so ?
2. What is the benefit of residual volume of air in the respiratory process ?
3. Why is the energy needs in plants is very less as compared to animals ? Explain.
4. Draw a well-labelled diagram of Nephron. Explain the process of formation of urine in the human kidney.
5. Draw a diagram showing Human Respiratory System. Label the following parts :
(a) Alveolus (b) Trachea
(c) Bronchus (d) Lungs

Short Notes and Board Exams Questions: Life Processes

Control and Coordination

VERY SHORT QUESTIONS (1 Mark)

Short Notes on control and coordination

1. Where is auxin synthesized in plants ?
2. Which gland is known as master gland ?
3. Name the hormone that regulates blood sugar level.
4. What is synapse ?
5. What are tropic movements ?
6. Which part of the brain is responsible for maintaining posture and balance of our body ?
7. Which hormone has inhibiting effects on growth of plants ?
8. What is phototropism ?
9. What are the components of central nervous system ?
10. What happens at synapse between two neurons ?

SHORT ANSWER TYPE QUESTIONS (2 Marks)

1. Draw a labelled diagram of neuron.
2. What is reflex arc ? Explain with the help of flow chart.
3. What is the cause of diabetes ? How it can be controlled ?
4. Why is it advisable to use iodised salt ?
5. What are sensory and motor neurons ? Write their functions.
6. Why is Abscisic acid called as stress hormone ?
7. What is the need for a system of control and coordination in an organization ?

Short Notes and Video Lectures : Control and Co-ordination (Endocrine System)

SHORT ANSWER TYPE QUESTIONS (3 Marks)

1. What are plant hormones ? Name a plant hormone that promotes growth in plants.
2. What is the significance of tropic movements in plants ? Explain any two types of tropic movements.
3. Which hormone is known as emergency hormone in our body ? How it helps in coping during emergency ?
4. Where are different receptors present in our body ? What are their functions ?

LONG ANSWER TYPE QUESTIONS (5 Marks)

1. Draw a labelled diagram of human brain and state the functions of its different parts.
2. What are hormones ? Give the name of associated gland and functions of different animal hormones.
3. What is feedback mechanism ? Explain its working with the help of one example.
4. (a) How brain and spinal cord are protected ?
(b) What are the different parts of human nervous system ?
(c) What are the limitations of nervous system ?

Short Notes and Video Lectures : Control and Co-Ordination (Nervous System)

How do organisms reproduce?

Short Notes: Reproduction in Organisms

VERY SHORT ANSWER TYPE QUESTIONS (1 Mark)

1. Name the two types of reproduction.
2. What type of reproduction takes place in plasmodium ?
3. Define vegetative propagation.
4. Where is DNA present in a cell ?
5. Name the glands associated with male reproductive system.
6. What is menstruation ?
7. Name two contraceptive methods.
8. Where are the reproductive parts located in a plant ?

SHORT ANSWER TYPE QUESTIONS (2 Marks)

1. Write two important functions of testosterone.
2. What is placenta ? Also write its functions.
3. Why do we see different types of organisms around us ?
4. What is the importance of variation ?
5. Why is vegetative propagation practiced for growing some types of plants ?
6. Write names of male and female sex hormones.
7. Mention the parts of a flower.
8. Differentiate between bisexual and unisexual flowers.

Short Notes: Sexual Reproduction in Flowering Plants

SHORT ANSWER TYPE QUESTIONS (3 Marks)

1. What is tissue culture ?
2. Explain the process of fertilisation in flowering plants.
3. Name the different constituents of semen.
4. Draw a well-labelled diagram of male reproductive system.
5. What is pre-natal sex determination ? Why is it banned ?
6. Draw a labelled diagram of the longitudinal section of a flower.

LONG ANSWER TYPE QUESTIONS (5 Marks)
1. What are the different modes of asexual reproduction ?
2. Draw a labelled diagram of female reproductive system and write the function of its different parts.
3. What is contraception ? Give different methods of contraception.
4. What happens in human female :
(a) when egg is fertilised ?
(b) when egg is not fertilised ?
5. Trace and explain the steps involved in the formation of seed.

Short Notes: Human Reproduction

Heredity and Evolution

Heredity and Evolution | Important Notes for Board Examination

VERY SHORT ANSWER TYPE QUESTIONS (1 Mark)

1. Write the scientific name of men and garden pea.
2. Where are genes located ?
3. No two individuals are absolutely alike in a population. Why ?
4. What are the chromosomes XY and XX known as ?
5. Name five varieties of vegetables which have been produced from ‘wild cabbage’ by the process of artificial selection.

SHORT ANSWER TYPE QUESTIONS (2 Marks)
1. Differentiate between homologous and analogous organs, with examples.
2. What are fossils ? How can the age of fossils be determined ?

SHORT ANSWER TYPE QUESTIONS (3 Marks)
1. Variation is beneficial to the species but not necessarily for the individual. Give three reasons to justify it.
2. The human hand, cat paw and horse foot, when studied in detail show the same structure of bones and point towards a common origin.
(a) What do you conclude from this ?
(b) What is the term given to such structures ?

LONG ANSWER TYPE QUESTIONS (5 Marks)

1. Which one is the edible part in kale, kohlrabi, broccoli, cabbage and cauliflower ?
2. Name a recessive trait which is quiet common in human beings.

Heredity and Evolution | Important Notes for Board Examination

Leave a Reply

Your email address will not be published. Required fields are marked *