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
(c) binary 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
(c) budding
(d) fragmentation
► (b) binary fission

4. In a potato, vegetative propagation takes place by:
(a) root
(b) leaf
(c) stem tuber
(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
(c) rhizoids
(d) roots
► (b) hyphae

7. Spirogyra reproduce by
(a) budding
(b) fragmentation
(c) regeneration
(d) fission
► (b) fragmentation

8. The process of release of eggs from the ovary is called
(a) menstruation
(b) reproduction
(c) insemination
(d) ovulation
► (d) ovulation

9. The seed that contains the future plant is called the
(a) cotyledons
(b) seed coat
(c) germ cells
(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
(c) neuter
(d) very small
► (a) bisexual

12. Plants like banana, rose, jasmine, orange have lost the capacity to produce
(a) seeds
(b) buds
(c) flower
(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
(c) Scrotum
(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
(c) HIV-AIDS
(d) Gonorrhea
► (b) Hepatitis

17. The period during adolescence when the reproductive tissues begin to mature is called
(a) ovyfetion
(b) puberty
(c) germination
(d) propagation
► (b) puberty

18. Which of the following is not an artificial method of vegetative propagation?
(a) Cutting
(b) Layering
(c) Budding
(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
(c) fertilisation
(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
(c) multiple fission
(d) regeneration
► (d) regeneration

23. Which is the most common method of reproduction in majority of fungi and bacteria?
(a) Budding
(b) Spore formation
(c) Binary fission
(d) Multiple fission
► (b) Spore formation

24. Which of the following method of contraception protects from acquiring sexually transmitted diseases?
(a) Surgery
(b) Condoms
(c) Copper-T
(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
(c) Uterus
(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
(c) gamete formation
(d) menopause
► (d) menopause

30. Pollen grains are produced by
(a) ovary
(b) ovule
(c) anther
(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
(c) Oviduct
(d) Uterus
► (a) Placenta

32. Where does fertilisation take place?
(a) Uterus
(b) Vagina
(c) Fallopian tube
(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
(c) Fertilisation
(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
(c) Uterus
(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
(c) Vagina → Cervix → 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
(c) ovary
(d) oviduct
► (d) oviduct

39. Many unicellular organisms reproduce by the process of
(a) fission
(b) ovulation
(c) regeneration
(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
(c) easy transfer of gametes
(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
(c) oviduct
(d) urethra
► (b) vas deferens

42. The anther contains
(a) Sepals
(b) Ovules
(c) Carpel
(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.
(c) A is true but R is false.
(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.
(c) A is true but R is false.
(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.
(c) A is true but R is false.
(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.
(c) A is true but R is false.
(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.
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