MCQ Questions for Class 10 Science Chapter 8 How do Organisms Reproduce?

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Chapter 8 How do Organisms Reproduce? Class 10 Science MCQ Questions

1. Vegetative propagation is practised because
(a) Plants which produce non viable seeds can be grown.
(b) It is a easier method than sowing seeds.
(c) Such plants produce seeds and fruits much earlier than other methods
(d) For obtaining better species of plants.
▶ (c) Such plants produce seeds and fruits much earlier than other methods

2. What is the surgical method of contraception in female and male respectively?
(a) Tubectomy and Vasectomy
(b) Vasectomy and Copper-T
(c) Tubectomy and Copper-T
(d) None of these
▶ (a) Tubectomy and Vasectomy

3. The female reproductive part of the flower consists of
(a) Stigma, Anther, Filament
(b) Style, Ovary, Thalamus
(c) Stigma, Ovary, Style
(d) Anther, Corolla, Filament
▶ (c) Stigma, Ovary, Style

4. IUCD is for
(a) vegetative propagation
(b) contraception
(c) increasing fertility
(d) avoiding miscarriage.
▶ (b) contraception

5. DNA copying is necessary during reproduction because
(a) it leads to the transmission of characters from parents to offsprings
(b) it leads to variation
(c) it helps in survival of the species over time
(d) all of these
▶ (d) all of these

6. Which of these is not the function of the seminal vesicles present in human males?
(a) To covert the sperms in a fluid medium.
(b) To provide nutrition.
(c) To make their transport easier.
(d) To make them sticky.
▶ (d) To make them sticky.

7. Which of the following diseases is transmitted sexually?
(a) Sleeping sickness
(b) Jaundice
(c) Elephantiasis
(d) Syphilis
▶ (d) Syphilis

8. In which of the following plant bud in notches of leaves help in its propagation?
(a) Radish
(c) Bougainvillea
(b) Bryophyllum
(d) Jasmine
▶ (c) Bougainvillea

9. Which of the following statements are incorrect about puberty?
(i) Body shows starting of sexual maturity at this stage.
(ii) The rate of general body growth begins to proceed faster as the reproductive tissues begin to mature.
(iii) Changes taking place in the body parts are different in boys and girls.
(iv) All the changes during puberty takes place very fast.
(a) (iii) and (iv)
(b) (ii) and (iv)
(c) (i), (ii) and (iii)
(d) (i), (ii), (iii) and (iv)
▶ (b) (ii) and (iv)

10. What are the functions performed by the testis in human males?
(a) Production of gametes-eggs and secretion of sex hormones-estrogen
(b) Production of gametes-sperms and secretion of sex hormones-testosterone
(c) Production of gametes-sperms and secretion of sex hormones-estrogen
(d) None of the above
▶ (b) Production of gametes-sperms and secretion of sex hormones-testosterone

11. The process of the transfer of pollen grains from the flower of one plant to the stigma of the flower of another plant of the same species is known as
(a) Cross pollination
(c) Self pollination
(b) Fertilisation
(d) None of the above
▶ (a) Cross pollination

12. Unisexual flowers contain
(a) both stamen and carpel
(b) only stamen
(c) only carpel
(d) either stamen or carpel
▶ (d) either stamen or carpel

13. Why are the testes located outside the abdominal cavity in scrotum?
(a) Because sperm formation requires more spaces.
(b) Because sperm formation requires a lower temperature.
(c) Because sperm formation requires a higher temperature.
(d) None of the above.
▶ (b) Because sperm formation requires a lower temperature.

14. Sexual reproduction is the mode of reproduction that
(i) depend on the involvement of two different gametes.
(ii) incorporates a process of combining DNA from two gametes.
(iii) gives better chances of variations as compared to asexual reproduction.
(iv) gives rise to genetically identical offspring.
(a) (i) and (ii)
(b) (i), (iii) and (iv)
(c) (i), (ii) and (iv)
(d) (i), (ii) and (iii)
▶ (d) (i), (ii) and (iii)

15. The number of chromosomes in parents and offsprings of a particular species remains constant due to
(a) doubling of chromosomes before zygote formation
(b) halving of chromosomes during gamete formation
(c) doubling of chromosomes during gamete formation
(d) halving of chromosomes after gamete formation
▶ (b) halving of chromosomes during gamete formation

16. The process where the unfertilised egg is released out of the body with the blood used to nourish the embryo is known as
(a) Menstruation
(c) Germination
(b) Fertilisation
(d) Pollination
▶ (a) Menstruation

17. Which of the following layers of uterus breaks off during menstruation?
(a) Epimetrium
(c) Endometrium
(b) Myometrium
(d) Perimetrium
▶ (b) Myometrium

18. After fertilisation name the part which develops into the seeds
(a) Ovary
(b) Ovule
(c) Pollen grain
(d) None of the above
▶ (b) Ovule

19. Spirogyra reproduces by
(a) Fission
(b) Regeneration
(c) Fragmentation
(d) Budding
▶ (c) Fragmentation

20. Which of the following is not a vegetative propagule?
(a) Root
(c) Leaf
(b) Stem
(d) Seed
▶ (d) Seed

21. Which of the following plants possess unisexual flowers?
(a) Watermelon
(b) Hibiscus
(c) Mustard
(d) Both (b) and (c)
▶ (a) Watermelon

22. The process in which the cytoplasm of a single eukaryotic cell is divided to form two daughter cells is known as?
(a) Karyokinesis
(b) Cytokinesis
(c) Meiosis
(d) Mitosis
▶ (d) Mitosis

23. Which of the following organisms does not depend on reproduction to exchange genetic material?
(a) Lion
(b) Papaya
(c) Bacterium
(d) Cockroach
▶ (c) Bacterium

24. Unicellular organisms reproduce by
(a) Mitotic cell division
(b) Meiotic cell division
(c) Both (a) and (b)
(d) None of the above
▶ (a) Mitotic cell division

25. Which of the following is the correct sequence regarding sexual reproduction in a flowering plant?
(a) Pollination, fertilisation, seedling, embryo
(b) Seedling, embryo, fertilisation, pollination
(c) Pollination, fertilisation, embryo, seedling
(d) Embryo, seedling, pollination, fertilisation
▶ (c) Pollination, fertilisation, embryo, seedling

26. Factors responsible for the rapid spread of bread mould on slices of bread are
(i) large number of spores
(ii) availability of moisture and nutrients in bread
(iii) presence of tubular branched hyphae
(iv) formation of round shaped sporangia.
Which of the above statements are true?
(a) (i) and (iii)
(b) (ii) and (iv)
(c) (i) and (ii)
(d) (iii) and (iv)
▶ (c) (i) and (ii)

27. Examples of vegetatively reproducing plants are
(a) tomato, okra, onion, cauliflower
(b) potato, ginger, onion, sugarcane
(c) cauliflower, onion, potato, tomato
(d) okra, onion, ginger, sugarcane
▶ (b) potato, ginger, onion, sugarcane

28. Tissue culture technique is used for
(a) growing disease free plant
(b) rapid multiplication of plant
(c) multiplication of sterile plants
(d) all of these
▶ (d) all of these

29. Human seminal plasma, the fluid part of semen, is produced by contributions from which of the given part?
A. Prostate gland
B. Bulbourethral gland
C. Urethra
D. Seminal vesicles
(a) A and D only
(b) A only
(c) A, B, C and D
(d) A, B and D only
▶ (d) A, B and D only

30. External fertilisation takes place in
(a) fish and frog
(b) frog and monkey
(c) dog and goat
(d) goat and fish
▶ (a) fish and frog