PYQ Vault

Day 127: CBSE Class 10 Science

5 questions (8 parts). Try each one first, then open its answer.

  1. Question 1

    Life Processes. Asked once: 2025 (same type asked 3 times)

    10
    Temporary finger-like extensions on the cell surface to take in food is formed in :

    Tap an option to check your answer.

  2. Question 2

    Life Processes. Asked once: 2025 (same type asked 3 times)

    Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.
    17
    Assertion (A) : In large animals, oxygen can reach different parts of the animal’s body easily. Reason (R) : Respiratory pigments take up oxygen from the air and carry it to body tissues.

    Tap an option to check your answer.

  3. Question 3

    Life Processes. Asked once: 2023 (same type asked 3 times)

    24
    Two green plants are kept separately in oxygen free containers, one in the dark and other in sunlight. It was observed that plant kept in dark could not survive longer. Give reason for this observation.

  4. Question 4

    Life Processes. Asked once: 2026 (same type asked 3 times)

    4
    Four chambered heart is a characteristic of :

    Tap an option to check your answer.

  5. Question 5 (case study, 4 parts)

    Life Processes. Asked once: 2024 (same type asked 3 times)

    Human digestive system is a tube running from mouth to anus. Its main function is to breakdown complex molecules present in the food which cannot be absorbed as such into smaller molecules. These molecules are absorbed across the walls of the tube and the absorbed food reaches each and every cell of the body where it is utilised for obtaining energy.
    38 (a)
    Name the glands present in the buccal cavity and write the components of food on which the secretion of these glands act upon.
    38 (b)
    Two organs have a sphincter muscle at their exit. Name them.
    38 (c)
    What will happen if : (i) mucus is not secreted by the gastric glands. (ii) Villi are absent in the small intestine.
    38 (c) OR
    “Bile juice does not contain any enzyme, yet it has important roles in digestion.” Justify the statement.