New ! Biology MCQ Practise Tests

12th Standard Bio-Zoology English Medium Reproduction in Organisms Reduced Syllabus Important Questions 2021

12th Standard

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Biology

Time : 01:00:00 Hrs
Total Marks : 100

    Multiple Choice Questions

    15 x 1 = 15
  1. The mode of reproduction in bacteria is by

    (a)

    Formation of gametes

    (b)

    Endospore formation

    (c)

    Conjugation

    (d)

    Zoospore formation

  2. Multiple fission is seen in _______

    (a)

    Vorticella and ceratium

    (b)

    Plasmodium and paramecium

    (c)

    Amoeba and cyanobacteria

    (d)

    Vorticella and plasmodium

  3. During favourable conditions ______ shows multiple fission.

    (a)

    Plasmodium

    (b)

    Amoeba

    (c)

    Planaria

    (d)

    Euglena

  4. Regeneration is not seen in ______

    (a)

    Starfish

    (b)

    Lizard

    (c)

    Hydra

    (d)

    Sea Anemone

  5. Autogamy is seen in ______

    (a)

    Paramecium

    (b)

    Plasmodium

    (c)

    Hydra

    (d)

    Amoeba

  6. If the entire organism behaves as a gamete the Phenomenon is called _____

    (a)

    Autogamy

    (b)

    Syngamy

    (c)

    Morphallaxis

    (d)

    Hologamy

  7. Technique used for cultivation of sponges is based on ______

    (a)

    Multiple fission

    (b)

    Parthenogenesis

    (c)

    Regeneration

    (d)

    Autogamy

  8. Isogamy is observed in ______

    (a)

    Monocystis

    (b)

    Mammals

    (c)

    Trichonympha

    (d)

    Reptiles

  9. All of the following are methods of asexual reproduction except

    (a)

    Regeneration

    (b)

    Conjugation

    (c)

    Sporulation

    (d)

    Fragmentation

  10. This is a method of sexual reproduction in which individuals of the same species temporarily write and exchange certain. amount of nuclear material and then get separated.

    (a)

    Syngamy

    (b)

    Conjugation

    (c)

    Parthenogenesis

    (d)

    Paedogenesis

  11. Paramecium and planaria show _____ types of division during asexual reproduction

    (a)

    Transverse binary fission

    (b)

    Longitudinal binary fission

    (c)

    Simple binary fission

    (d)

    Oblique binary fission

  12. Regeneration was first studied in _______

    (a)

    star fish

    (b)

    Planaria

    (c)

    Hydra

    (d)

    Aurelia

  13. A few statements describing certain features of reproduction are given below. Select the options that are true for both sexual and asexual reproduction from the options given:
    (i) Gametic fusion takes place
    (ii) Transfer of genetic material takes place
    (iii) Reduction division takes place
    (iv) Progeny have some resemblance, with parents

    (a)

    i and ii

    (b)

    ii and iii

    (c)

    ii and iv

    (d)

    i and ii

  14. Which of the following statements, support the view that elaborate sexual reproductive process develops much later in the organic evolution?
    i. Lower groups of organisms have simpler body design
    ii. Asexual reproduction is common- in lower groups
    iii. Asexual reproduction is common in higher groups of organisms
    iv. The high incidence of sexual reproduction is in angiosperms and vertebrates.

    (a)

    i, ii and iii

    (b)

    i, iii and iv

    (c)

    i, ii and iv

    (d)

    ii, iii and iv

  15. Identify the mismatched pair.

    (a)

    Paedogenesis - Liver fluke

    (b)

    Strobilation - Aurelia

    (c)

    Amphitoky - Honeybee

    (d)

    Encystment - Amoeba

  16. 2 Marks

    10 x 2 = 20
  17. Name an organism where cell division is itself a mode of reproduction.

  18. Which type of reproduction is effective -Asexual or sexual and why?

  19. What is plasmotomy?

  20. What is morphallaxis?

  21. What is exogamy?

  22. What is merogamy?

  23. Mention the phases in the life cycle of an organism.

  24. What is artificial parthenogenesis?

  25. Name the types of natural parthenogenesis.

  26. Identify the parts marked as A, B, C, D and E for the below diagram.

  27. 3 Marks

    10 x 3 = 30
  28. The unicellular organisms which reproduce by binary fission are considered immortal. Justify

  29. Give reasons for the following:
    (a) Some organisms like honey bees are called parthenogenetic animals
    (b) A male honey bee has 16 chromosomes where as its female has 32 chromosomes

  30. Explain multiple fission in plasmodium.

  31. What is strobilation?

  32. What is apolysis? Write its significance.

  33. What is ovoviviparous condition?

  34. Describe pedal laceration.

  35. Compare schizogony with sporogony of Plasmodium

  36. Give the definition for (a) Arrhenotoky (b) Thelytoky (c) Amphitoky

  37. 'A' and 'B' are the male & female sex cells respectively which look alike and performs similar functions. 'A' and 'B' fuse to form a new individual 'D'. Which type of gametic fusion does this represent? Give an example

  38. 5 Marks

    7 x 5 = 35
  39. Differentiate between the following:
    (a) Binary fission in amoeba and multiple fission in Plasmodium
    (b) Budding in yeast and budding in Hydra
    (c) Regeneration in lizard and Planaria

  40. How is juvenile phase different from reproductive phase?

  41. What is the difference between syngamy and fertilization?

  42. Explain parthenogenesis.

  43. Write notes on binary fission in animals.

  44. Describe the regeneration process noticed in living organism.

  45. Given an account on following terms.
    (a) Hologamy
    (b) Isogamy
    (c) Anisogamy
    (d) Merogamy
    (e) Paedogamy

*****************************************

TN 12th Standard Biology free Online practice tests

Reviews & Comments about 12th Standard Bio-Zoology English Medium Reproduction in Organisms Reduced Syllabus Important Questions 2021

Write your Comment