ICSE Class 10 Biology Important Questions

ICSE Class 10 Biology is indeed a complex subject with lots of concepts and diagrams to memorise. From the scientific names to the skeletal features, nomenclature, and plant and animal anatomy, the syllabus covers everything. Due to the broadness of the subject, the chances of forgetting the important topics are high in the case of the ICSE Class 10 Biology subject. Hence, the subject specialists at BYJU’S have deduced the important questions here to refresh all the important topics that are most likely to come in the examination. The ICSE Class 10 Biology Important Questions here will help you score the best in exams.

Important Questions of Biology give the students a brief idea of questions that can be framed in the examination. It also helps in developing skills and also improves your performance in the examination. These important questions are systematically arranged according to the ICSE Class 10 Biology syllabus and are advised to be solved on a daily basis.

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Students of ICSE Class 10 should practise the ICSE Class 10 Important Questions of Biology to ace their final examination.

  1. Name the following:
    1. The male hormone produced by the interstitial cells.
    2. The blood vessels supplying blood to the kidney.
    3. The fluid that transports fatty acids and glycerol.
    4. The gas released by green plants during photosynthesis.
    5. The condition of a cell in which the cell contents are shrunken.
  2. State whether the following statements are true or false. If false, rewrite the correct form of the statement by changing the first word only:
    1. The functional unit of the nervous system is a neuron.
    2. Abscisic acid is a growth promoting hormone.
    3. Testosterone produces female sexual characters.
    4. Guttation is the exudation of plant sap from the injured parts of the plant.
    5. Acetylcholine acts as a neurotransmitter.
  3. Give technical terms for the following:
    1. Plasma that is devoid of fibrinogen.
    2. The process by which a hydrophilic substance absorbs water.
    3. The type of division that takes place in the reproductive cells.
    4. A cross between two individuals having one pair of contrasting characters.
    5. The cessation of menstruation in females.
  4. State the difference between the following pairs:
    1. Autosomes and sex chromosomes.
    2. Corpus callosum and corpus luteum.
    3. Afferent arteriole and efferent arteriole.
    4. Plasmolysis and deplasmolysis.
    5. Auxins and cytokinins
  5. Give two examples of each:
    1. Endocrine glands
    2. Parthenocarpic fruits
    3. Phytohormones
    4. Hereditary traits
    5. Diseases caused by bacteria
  6. Complete the following statements:
    1. is a defect of the eye in which the optic axis of the eye becomes too short.
    2. is the scientific name of man.
    3. Short-sightedness can be corrected by using a lens.
    4. The pancreas produces the hormone.
    5. The embryo inside the uterus is protected from mechanical injury by the ______
  7. Study the given diagram and answer the questions that follow:
    ICSE Class 10 Biology Important Questions

    1. Label the parts 1-4.
    2. State the structural difference between parts 1 and 2.
    3. Which stage of urine formation takes place in part 3?
    4. Name the liquid flowing through ‘X’.
  8. What is photosynthesis? Name the two phases of photosynthesis. Write a balanced chemical equation for photosynthesis.
  9. In what form is glucose stored in plants? What are the functions of the palisade parenchyma in a leaf?
  10. The given figure represents an experimental set-up to demonstrate a certain phenomenon in plants. The set-up was kept in sunlight for about two hours.
    ICSE Class 10 Biology Important Questions-1

    1. What is the aim of this experiment?
    2. Define the process mentioned in (i) above.
    3. What do you observe in the experimental set-up after some time?
    4. Is there any control for this experiment? If so, mention it.
  11. Explain briefly:
    1. The pancreas is an exocrine as well as an endocrine gland.
    2. It is necessary to keep a plant in the dark before carrying out an experiment on photosynthesis.
    3. Green plants are called producers.
    4. In banyan trees, the leaves are coated with a thick cuticle.
    5. When the temperature is high, the rate of transpiration is also high.
  12. Write briefly as indicated in the brackets:
    1. Diabetic patient. (substance present in excess in the urine)
    2. Stomata. (gas given out during the day)
    3. Spinal cord. (function)
    4. Cochlea. (location)
    5. Neuron. (function)
  13. With reference to the functioning of the eye, answer the following questions:
    1. What is the power of accommodation of the eye?
    2. What is the shape of the lens during:
      1. near vision
      2. distant vision
    3. Name the two structures in the eye responsible for bringing about a change in the shape of the lens.
    4. Name the cells of the retina and their respective pigments which get activated:
      1. in the dark
      2. in the light
  14. List four main characteristics of Homo sapiens sapiens.
  15. The given figure represents the human brain.
    ICSE Class 10 Biology Important Questions-2

    1. Label the parts 1 – 5.
    2. State the functions of parts 4 and 5.
    3. How are neurons arranged in the brain?
    4. How is the brain protected?
  16. State the function of the following:
    1. Aqueous humour
    2. Aorta
    3. Ethylene
    4. Medulla oblongata
    5. Spindle fibres
  17. Write the location and function of the following:
    1. Neurilemma
    2. Meninges
    3. Macula
    4. Genes
    5. Thylakoids
  18. Answer the following questions:
    1. State the principles of Lamarck’s theory of inheritance.
    2. Name two sex-linked inherited diseases and write their causes.
    3. State the significance of meiosis (any 2 points).
    4. State three advantages of a small family.
  19. The given figure depicts a certain phase of the heart. Study it and answer the questions that follow:
    ICSE Class 10 Biology Important Questions-3

    1. Identify the phase of the heart.
    2. Give two reasons to support your answer.
    3. Define double circulation.
  20. The given diagram shows a stage during cell division. Study the diagram and answer the questions that follow:
    ICSE Class 10 Biology Important Questions-4

    1. Name the parts labelled 1, 2 and 3.
    2. Which stage of cell division is shown in the figure? Give reasons to justify your answer.
    3. Where in the body does this type of cell division occur?
    4. Name the stage prior to this stage and draw a diagram to represent the same.

Benefits of Solving ICSE Class 10 Biology Important Questions

  • It covers all the essential topics so that students don’t miss out on any important topics.
  • By solving the ICSE important questions, students will get an idea about the type of questions they can expect from each chapter.
  • They can self-analyze their preparation and work on their weak points.
  • It helps in revising the entire syllabus in quick time.


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