PYQ Vault

Day 31: MH HSC Class 12 Biology

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

  1. Question 1

    Molecular Basis of Inheritance. Asked once: Jul 2025

    Q. 1(i)
    The number of base pairs present around a histone octamer of nucleosome is _____ .

    Tap an option to check your answer.

  2. Question 2

    Origin and Evolution of Life. Asked once: Jul 2025

    Q. 11
    Mention any four drawbacks of Darwinism.

  3. Question 3

    Plant Growth and Mineral Nutrition. Asked once: Feb 2026

    Q. 25
    (a) What is grand period of growth? (b) Give two examples each of : (1) Growth promoters (2) Growth inhibitors

  4. Question 4

    Plant Water Relation. Asked once: Jul 2025

    Q. 2(ii)
    Name the process in which swelling of hydrophilic colloids occur due to adsorption of water.

  5. Question 5

    Reproduction in Lower and Higher Animals. Asked once: Feb 2026

    Q. 23
    What is infertility? Describe in brief ZIFT and GIFT.