Chapter 15 : REPRODUCTION IN ORGANISMS

Choose Appropriate Alternative

1. Asexual reproduction is...
   

   [A] a fusion of specialized cells 
   [B] a method by which all types of organisms reproduce
   [C] a method producing genetically identical off-springs
   [D] a method involving more than one parent

2. Which of the following organisms does not reproduce by binary fission?
   

   [A] Amoeba [B] Plasmodium [C] Euglena [D] Paramoecium

3. Reproduction is essential for living organisms in order to...
   

   [A] keep the individual organism alive
   [B] fulfill their energy requirement 
   [C] maintain growth 
   [D] continue the species forever

4. A multicellular organism which reproduces by budding is...
   

   [A] Amoeba [B] Yeast [C] Paramoecium [D] Hydra

5. A simple multicellular animal having tantacles and lives in fresh water reproduces by asexual method of...
   

   [A] binary fission [B] spore formation [C] budding [D] fragmentation

6. In which of the following organisms does spore formation take place?
   

   [A] Mucor [B] Planaria [C] Spirogyra [D] Potato

7. The method of asexual reproduction in spirogyra is...
   

   [A] division of a cell into two cells 
   [B] breaking of filaments into smaller bits
   [C] division of a cell into many cells
   [D] formation of a large number of buds

8. An alga which reproduces by asexual method called fragmentation is...
   

   [A] rhizopus [B] salmonella [C] plasmodium [D] spirogyra

9. The cut part of a plant stem (having roots and is fixed to the ground) used in the process of grafting is...
   

   [A] stock [B] scion [C] cutting [D] bud

10. In asexual reproduction, two off-springs having the same genetic material and same body features are called...
    

    [A] callus [B] twins [C] clones [D] chromosomes

11. ______ is the simplest method of asexual reproduction in unicellular organisms.
    

    [A] Binary fission [B] Budding [C] Fragmentation [D] Spore formation

12. The protective layer formed by some unicellular organisms during adverse condition is called...
    

    [A] bud [B] scion [C] cyst [D] graft

13. Hydra can reproduce by...
    

    [A] budding                       [B] regeneration
    [C] both budding and regeneration [D] multiple fission

14. Rhizopus reproduces by...
    

    [A] binary fission [B] budding [C] fragmentation [D] sporulation

15. Cutting is used to grow a new plant of...
    

    [A] rose [B] lemon [C] mango [D] potato

16. Which of the following methods is used for vegetative propagation of plants having seeds with long dormancy or poor germination capacity?
    

    [A] Cutting [B] Budding [C] Layering [D] Grafting

17. In human cells, there are ______ chromosomes.
    

    [A] 23 [B] 32 [C] 46 [D] 64

18. The male organ in a flowering plant is...
    

    [A] Carpel [B] Stamen [C] Pollen tube [D] Seed

19. The female organ in a flowering plant is...
    

    [A] Carpel [B] Stamen [C] Pollen tube [D] Seed

20. In humans, the fertilization of ovum by a sperm takes place in...
    

    [A] testis [B] ovary [C] oviduct [D] uterus

21. In humans, the embryo gets nutrition from mother's blood through...
    

    [A] ovary [B] oviduct [C] amnion [D] placenta

22. Menstruation in human female lasts for ______ days.
    

    [A] 2-3 [B] 3-5 [C] 14 [D] 28-30

23. The menstrual cycle in human female is repeated about every ______ days.
    

    [A] 14 [B] 21 [C] 28 [D] 270

24. What does 'S' stand for in AIDS?
    

    [A] System [B] Syndrome [C] Symptom [D] Synapse

25. The immune system becomes weak in a person suffering from...
    

    [A] Syphillis [B] Gonorrhoea [C] AIDS [D] Typhoid

26. Which of the following shows budding?
    

    [A] Yeast [B] Amoeba [C] Paramoecium [D] Plasmodium

27. Which of the following reproduces by multiple fission?
    

    [A] Hydra [B] Yeast [C] Spirogyra [D] Plasmodium

28. Regeneration is observed in...
    

    [A] amoeba [B] planaria [C] spirogyra [D] yeast

29. Which of the following is not produced in ovary?
    

    [A] Ovum [B] Estrogen [C] Progesterone [D] Testosterone

30. What is formed after fertilization?
    

    [A] A sperm [B] An ovum [C] A zygote [D] A gamete

31. Which of the following plants shows vegetative propagation?
    

    [A] Wheat [B] Jute [C] Sunflower [D] Bryophyllum

32. Testes in human male are located in...
    

    [A] abdominal cavity [B] vas deferens [C] scrotum [D] penis

33. In the process of sexual reproduction...
    

    [A] only male is necessary
    [B] only female is necessary
    [C] both male and female are necessary
    [D] either a male or a female is necessary

34. The process of release of an egg from the ovary is called...
    

    [A] reproduction [B] ovulation [C] menstruation [D] fertilization

35. Stoppage of sexual cycle permanently in a female is called...
    

    [A] menopause [B] menstruation [C] ovulation [D] lactation

36. The method by which desired characters of two plants can be combined is...
    

    [A] cutting [B] layering [C] budding [D] grafting

37. The disease caused by Treponema Palidium is...
    

    [A] AIDS [B] Syphillis [C] Gonorrhoea [D] Hepatitis

38. Vegetative propagation is observed in...
    

    [A] potato [B] yeast [C] hydra [D] mucor

39. The stage at which there is a gradual change in structure of reproductive organs of human male and female is called...
    

    [A]spermatogenesis [B] oogenesis [C] menarche [D] puberty

40. The temperature in the scrotum is about ______ than the body temperature.
    

    [A] 2-3 °C lower [B] 2-3 °C higher [C] 5-6 °C lower [D] 5-6 °C higher

41. The sexual cycle in human female starts at______.
    

    [A] birth [B] the age of 45 [C] at the age of 28 [D] puberty stage

42. The sexual cycle in human female remains active (functional), generally up to the age of...
    

    [A] 30 years [B] 40 years [C] 50 years [D] 60 years

43. _______ fertilizes an ovum in a female's body.
    

    [A] Blood [B] Testosterone [C] Sperm [D] Seminal fluid

44. Which of the following is a chemical device for birth control?
    

    [A] Copper-T [B] Birth-control pills [C] Condom [D] Loop

45. Which of the following is a surgical method of contraception for women?
    

    [A]  Copper-T [B] Loop [C] Tubectomy [D] Vasectomy

46. By which process is the continuity of life of various species maintained?
    

    [A] Digestion [B] Reproduction [C] Respiration [D] Contraception

47. Through what are the hereditary characters inherited?
    

    [A] Golgi complex [B] Ribosomes [C] Chromosomes [D] Mitochondria

48. By which simple method asexual reproduction takes place in unicellular organisms like protozoa and bacteria?
    

    [A] Fragmentation [B] Regeneration [C] Fission [D] Budding

49. When one cell divides to produce many cells, then the division is known as...
    

    [A] fission [B] binary fission [C] multiple fission [D] fragmentation

50. In which organisms does reproduction take place through binary fission?
    

    [A] Hydra, Planaria [B] Hydra, Amoeba [C] Amoeba, Paramoecium [D] Mucor, Yeast

51. Which structure changes first during binary fission?
    

    [A] Nucleus [B] Nuclear membrane [C] Cytoplasm [D] Cell membrane

52. Which organisms reproduce through fragmentation?
    

    [A] Volvox, Sea anemone[B] Spirogyra, Sea anemone
    [C] Amoeba, Sea anemone [D] Paramoecium, Sea anemone

53. Which of the following are asexual modes of reproduction in multicellular organisms?
    

    [A] Regeneration, Budding [B]Binary fission, Regeneration 
    [C] Regeneration, Fission [D] Multiple fission, Budding

54. The vegetative propagation method used between a lemon plant and an orange plant is known as...
    

    [A] cutting [B] layering [C] budding [D] grafting

55. How many chromosomes are present in the gamate of human male?
    

    [A] 23 [B] 46 [C] 22 [D] 1

56. The flower having both male and female reproductive organs is called...
    

    [A] sexual [B] asexual [C] bisexual [D] monosexual 

57. In flowering plants, the fertilized egg cell develops into ______ within ovule.
    

    [A] seed [B] fruit [C] flower [D] embryo

58. Girls normally attain puberty at the age of _____ years.
    

    [A] 10 [B] 12 [C] 14 [D] 16

59. Boys generally attain puberty at the age of _____ years.
    

    [A] 10 [B] 12 [C] 14 [D] 16

60. The main reproductive organ in human male is...
    

    [A] penis [B] vas deferans [C] scrotum [D] testis

61. The main reproductive organ in human female is...
    

    [A] ovary [B] oviduct [C] uterus [D] ovum

62. The growing embryo (foetus) obtains nutrition from mother's body from...
    

    [A] Placenta [B] amnion [C] amniotic fluid [D] heart

ANSWERS

(1) C (2) B (3) D (4) D (5) C (6) A (7) B (8) D (9) A (10) C (11) A (12) C (13) C (14) D (15) A (16) D (17) C (18) B (19) A (20) C (21) D (22) B (23) C (24) B (25) C (26) A (27) D (28) B (29) D (30) C (31) D (32) C (33) C (34) B (35) A (36) D (37) B (38) A (39) D (40) A (41) D (42) C (43) C (44) B (45) C (46) B (47) C (48) C (49) C (50) C (51) A (52) B (53) A (54) D (55) A (56) C (57) D (58) B (59) C (60) D (61) A (62) A (63) (64) (65) (66) (67) (68) (69) (70)