PYQ Vault

Day 13: CBSE Class 10 Science

5 questions. Try each one first, then open its answer.

  1. Question 1

    How do Organisms Reproduce?. Asked 3 times: 2022*, 2024*, 2025 (* = numbers or wording changed that year)

    35 (a)
    (i) Write the functions of the following parts of human female reproductive system : (I) Ovary (II) Fallopian tube (III) Uterus (ii) State briefly two contraceptive methods used by human males.

  2. Question 2

    How do Organisms Reproduce?. Asked 3 times: 2022*, 2023*, 2025 (* = numbers or wording changed that year)

    9
    Select a pair of bisexual flowers from the following :

    Tap an option to check your answer.

  3. Question 3

    Life Processes. Asked 3 times: 2023*, 2024*, 2025 (* = numbers or wording changed that year)

    33
    Give reasons for the following : (a) Rate of breathing in aquatic animals is much faster than terrestrial organisms. (b) Rings of cartilage are present in throat of human being. (c) During anaerobic respiration, a 3 carbon molecule (compound) is formed as an end product instead of CO2\mathrm{CO_2} in some cells of human beings.

  4. Question 4

    Life Processes. Asked 3 times: 2023*, 2024*, 2025 (* = numbers or wording changed that year)

    35 (b)
    (i) State the role of rings of cartilage present in the throat. (ii) Discuss the role of the ribs and diaphragm when air is taken in during the breathing cycle. (iii) Why do we get muscle cramps during heavy exercise ? Explain.

  5. Question 5

    Life Processes. Asked 3 times: 2023*, 2024*, 2025 (* = numbers or wording changed that year)

    23 (a)
    How is lymph formed ? State its important function.