Chapter: How Do Organisms Reproduce?

Chapter: How Do Organisms Reproduce?

Section A: Multiple Choice Questions (5 Marks)

  1. Asexual reproduction through budding takes place in: (1)

    • (a) Amoeba

    • (b) Yeast

    • (c) Plasmodium

    • (d) Leishmania

  2. The part of the flower that develops into a fruit after fertilization is the: (1)

    • (a) Ovule

    • (b) Stigma

    • (c) Petal

    • (d) Ovary

  3. Which of the following contraceptive methods also protects against sexually transmitted diseases (STDs)? (1)

    • (a) Oral pills

    • (b) Copper-T

    • (c) Condom

    • (d) Diaphragm

  4. In which of the following organisms does multiple fission take place? (1)

    • (a) Hydra

    • (b) Yeast

    • (c) Plasmodium

    • (d) Spirogyra

  5. The correct sequence of organs in the male reproductive system for the transport of sperm is: (1)

    • (a) Testis → Ureter → Urethra

    • (b) Testis → Vas deferens → Urethra

    • (c) Testis → Prostate gland → Urethra

    • (d) Testis → Seminal vesicle → Urethra

Section B: Assertion and Reason Questions (4 Marks)

Directions: In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

  1. Assertion (A): Regeneration is not the same as reproduction. (1)
    Reason (R): Regeneration requires specialized cells that can proliferate and differentiate to form different tissue types, and it is primarily a process of healing/repair, not a guaranteed mode of reproduction.

  2. Assertion (A): The lining of the uterus thickens and is richly supplied with blood vessels after fertilization. (1)
    Reason (R): This thickened lining is required for the nourishment of the growing embryo.

  3. Assertion (A): Offspring formed by asexual reproduction show greater similarity among themselves. (1)
    Reason (R): Asexual reproduction involves only one parent and does not involve the fusion of gametes.

  4. Assertion (A): Testes are located outside the abdominal cavity in the scrotum. (1)
    Reason (R): The process of sperm formation requires a lower temperature than the normal body temperature.

Section C: Short Answer Questions (6 Marks)

  1. What are the two essential functions of the ovary in the human female? (2)

  2. List any two differences between Binary Fission (as in Amoeba) and Multiple Fission (as in Plasmodium). (2)

  3. (a) Name two plants that can be grown by the method of vegetative propagation. (1)
    (b) State one advantage of using this method for growing plants. (1)

Section D: Case-Based Question (5 Marks)

  1. Read the following paragraph and answer the questions that follow:

    The process of reproduction in flowering plants involves the transfer of pollen grains from the anther to the stigma, which is known as pollination. If this transfer occurs on the same flower or another flower on the same plant, it is called self-pollination, and if it occurs between flowers of different plants of the same species, it is called cross-pollination. Following this, the male germ cell present in the pollen grain travels down the pollen tube to fuse with the female germ cell (egg) in the ovule, leading to fertilization and the formation of a zygote.

    (a) Name the part of the flower that produces pollen grains. (1)
    (b) What is the fusion of the male and female germ cells called, and what is the product of this fusion? (2)
    (c) Write the fate of the ovule and the ovary after fertilization. (2)

Section E: Long Answer Questions (10 Marks)

  1. (a) Draw a neat, labelled diagram of the human female reproductive system. (3)
    (b) What are the functions of the following parts: (2)

    • (i) Fallopian Tube (Oviduct)

    • (ii) Uterus

  2. What is the significance of variation in the process of reproduction? Explain how sexual reproduction results in more variations than asexual reproduction. (5)


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