MCQ Questions for Class 10 Science: Ch 8 How do Organisms Reproduce

1. The ability of a cell to divide into several cells during reproduction in Plasmodium is called

(a) budding

(b) multiple fission

(d) reduction division

► (b) multiple fission

2. When an organism breaks into a number of parts and each part develop into an individual, it is called:

a) Budding

b) Binary fission

c) Regeneration

d) Spore formation

► c) Regeneration

3. During favourable conditions, Amoeba reproduces by

(a) multiple fission

(b) binary fission

(d) fragmentation

► (b) binary fission

4. In a potato, vegetative propagation takes place by:

(a) root

(b) leaf

(d) grafting

► (c) stem tuber

5. In vegetative reproduction, the new individuals are genetically –

a) Similar

b) Dissimilar

c) Abnormal

d) None of these

► a) Similar

6. In Rhizopus, tubular thread like structures bearing sporangia at their tips are called

(a) filaments

(b) hyphae

(d) roots

► (b) hyphae

7. Spirogyra reproduce by

(a) budding

(b) fragmentation

(d) fission

► (b) fragmentation

8. The process of release of eggs from the ovary is called

(a) menstruation

(b) reproduction

(d) ovulation

► (d) ovulation

9. The seed that contains the future plant is called the

(a) cotyledons

(b) seed coat

(d) embryo

► (d) embryo

10. During grafting, the portion of plant that is grafted is called –

a) Stock

b) Scion

c) stalk

d) stem

► b) Scion

11. The flower of the Hibiscus plant is

(a) bisexual

(b) unisexual

(d) very small

► (a) bisexual

12. Plants like banana, rose, jasmine, orange have lost the capacity to produce

(a) seeds

(b) buds

(d) roots

► (a) seeds

13. In man, fertilization of ovum takes place in

a) Vagina

b) ovary

c) uterus

d) Fallopian tubes

► d) Fallopian tubes

14. Along the path of the vas-deferens the secretions of which gland provide nutrition to the sperms?

(a) Prostate glands

(b) Seminal vesicles

(d) Urinary bladder

► (b) Seminal vesicles

15. Anemophily is the pollination by –

a) Birds

b) Rain

c) insects

d) Wind

► d) Wind

16. Which among the following diseases is not sexually transmitted?

(a) Syphyllis

(b) Hepatitis

(d) Gonorrhea

► (b) Hepatitis

17. The period during adolescence when the reproductive tissues begin to mature is called

(a) ovyfetion

(b) puberty

(d) propagation

► (b) puberty

18. Which of the following is not an artificial method of vegetative propagation?

(a) Cutting

(b) Layering

(d) Grafting

► (c) Budding

19. There is a greater possibility for the evolution of a new species in organisms which reproduce by

(a) binary fission

(b) budding

(d) regeneration

► (c) fertilisation

20. The normal duration of menstrual cycle is

a) 7 – 8 days

b) 13 – 15 days

c) 3 – 4 days

d) 28 days

► d) 28 days

21. A common feature of reproduction in Amoeba, spirogyra and yeast is that:

a) Asexual reproduction occurs after sexual reproduction

b) Asexual reproduction occurs before sexual reproduction

c) Asexual reproduction does not involve gametes

d) Asexual reproduction involves only one parent

► (d) Asexual reproduction involves only one parent.

22. The ability of an organism to develop whole body from a broken piece or fragment is called

(a) binary fission

(b) budding

(d) regeneration

► (d) regeneration

23. Which is the most common method of reproduction in majority of fungi and bacteria?

(a) Budding

(b) Spore formation

(d) Multiple fission

► (b) Spore formation

24. Which of the following method of contraception protects from acquiring sexually transmitted diseases?

(a) Surgery

(b) Condoms

(d) Oral-pills

► (b) Condoms

25. Anemophily is the pollination by:

a) Birds

b) Rain

c) insects

d) Wind

► d) Wind

26. The embryo in humans gets nutrition from the mother’s blood with the help of a special tissue called

(a) Placenta

(b) Villi

(d) Womb

► (a) Placenta

27. Which part of the flower forms the fruit?

a) Whole flower

b) Only stamens and carpel

c) Only ovary

d) Only carpel

► c) Only ovary

28. Fertilization in plants occurs in the:

a) Embryo sac

b) Style

c) Pollen tube

d) Stigma

► a) Embryo sac

29. The ability to reproduce is lost in a female after

(a) fertilisation

(b) menstruation

(d) menopause

► (d) menopause

30. Pollen grains are produced by

(a) ovary

(b) ovule

(d) corolla

► (c) anther

31. When the foetus is growing inside the uterus it needs nutrients. Which part provides these nutrients?

(a) Placenta

(b) Amniotic sac

(d) Uterus

► (a) Placenta

32. Where does fertilisation take place?

(a) Uterus

(b) Vagina

(d) Cervix

► (c) Fallopian tube

33. Which of this is seminal fluid?

a) Prostate gland

b) Cowper’s gland

c) Seminal vesicle

d) all of these

► c) Seminal vesicle

34. What marks the beginning of the reproductive life of a woman?

(a) Menopause

(b) Menarche

(d) Ovulation

► (b) Menarche

35. At the time of entering into ovule, pollen tube has

a) three male nuclei

b) two male nuclei

c) one gamete nucleus

d) four male gametes

► b) two male nuclei

36. Which of the following is a primary sex organ in a mammal?

(a) Ovary

(b) Vagina

(d) Mammary glands

► (a) Ovary

37. When a sperm is deposited into the vagina which route does it travel?

(a) Vagina → Oviduct → Uterus → Cervix

(b) Vagina → Ovary → Uterus → Oviduct

(d) Vagina → Uterus → Cervix → Oviduct

► (c) Vagina → Cervix → Uterus → Oviduct

38. The fertilisation of human egg by the sperm takes place in

(a) vagina

(b) uterus

(d) oviduct

► (d) oviduct

39. Many unicellular organisms reproduce by the process of

(a) fission

(b) ovulation

(d) non-disjunction

► (a) fission

40. In human males, the testes lie in the scrotum, because it helps in the

(a) process of mating

(b) formation of sperms

(d) secretion of estrogen

► (b) formation of sperms

41. A pair of duct arising from testis, which carry sperms are

(a) fallopian tube

(b) vas deferens

(d) urethra

► (b) vas deferens

42. The anther contains

(a) Sepals

(b) Ovules

(d) Pollen grains.

► (d) Pollen grains.

43. Assertion: In male reproductive system, transport of sperm takes place in a fluid which also provide nutrition.

Reason: Protective glands and seminal vesicles secret in the vas deferens.

(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.

(d) A is false but R is true.

(e) Both A and R are false.
► (a) Both A and R are true and R is the correct explanation of A.

44. Assertion: Ovary releases one egg every month.

Reason: The lining of uterus is always thick and spongy.

(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.

(d) A is false but R is true.

(e) Both A and R are false.
► (c) A is true but R is false.

45. Assertion: In human beings, the female. play a major role in determining the sex of the offspring.
Reason: Women have two X chromosomes.

(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.

(d) A is false but R is true.

(e) Both A and R are false.
► (d) A is false but R is true.

46. Assertion: Amoeba reproduced by fission

Reason: All unicellular organisms reproduced by asexual method.

(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.

(d) A is false but R is true.

(e) Both A and R are false.
► (a) Both A and R are true and R is the correct explanation of A.

MCQ Questions for Class 10 Science: Ch 8 How do Organisms Reproduce

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