Competitive Exams: Zoology MCQs (Practice-Test 22 of 112)

  1. With. Respect to development of frog, which one of the following pairs is NOT correctly matched?

      • Cleavage
      • Holoblastic
      • Morula
      • Blastomeres
      • Blastula
      • Blastopore
      • Gastrula
      • Triploblastic
  2. Examine the diagram given belowrepresenting the top view of area pellucida of developing chick egg at 18. Hours of incubation: Match List I with List II and select the correct answer:

    List-I (Labels of the diagram) List-II (Nomenclature)
    1. N/A

    2. N/A

    3. N/A

    4. N/A

    1. Hensen's node

    2. Primitive streak

    3. Notochoral process

    4. Primitive groove

    • A
    • B
    • C
    • D
      • 3
      • 2
      • 4
      • 1
      • 4
      • 1
      • 3
      • 2
      • 3
      • 1
      • 4
      • 2
      • 4
      • 2
      • 3
      • 1
  3. Which one of the following is the process, which involves the epithelial sheath spreading to cover the deeper layer of the embryo with reference to frog?

    1. Involution

    2. Invagination

    3. convergence

    4. Epiboly

  4. Match List I with List II and select the correct answer:

    List-I (Foetal membrane in chick) List-II (Function)
    1. Amnion

    2. Chorion

    3. Yolk sac

    4. Allantois

    1. Excretion

    2. Protection against mechanical shock

    3. Nutrition

    4. Protection from desiccation

    5. Absorption of water and albumen

    • A
    • B
    • C
    • D
      • 2
      • 3
      • 4
      • 1
      • 1
      • 5
      • 3
      • 2
      • 1
      • 3
      • 4
      • 2
      • 2
      • 5
      • 3
      • 1
  5. In syndesmochorial placenta, the sequence of maternal tissue between the maternal blood and the foetal tissue is

    1. maternal endothelium, connective tissue and epithelium

    2. maternal connective tissue and epithelium

    3. maternal epithelium, endothelium and connective tissue

    4. maternal endothelium and connective tissue

  6. The Biogenetic Law is no longer acceptable because it holds among other things that

    1. recapitulation of phylogeny in ontogeny is never complete

    2. embryos resemble the ancestral adults of evolutionary gages

    3. resemblances, if any, are between embryos and not between embryos and adults of evolutionary stages

    4. pharyngeal pouches and aortic arches are notable examples of recapitulation in the vertebrate series

  7. With reference to the release of energy in the living cell, consider the following statements:

    1. In the aerobic degradation of a mole of glucose, the conversion of malic acid into oxaloacetic acid results in the net gain of 4 ATP molecules

    2. when succinic acid is oxidised to fumaric acid, two hydrogen ions and two electrons are removed from succinic add

    3. In muscle cell, a relatively small amount of ATP is present, but a larger supply of creatine phosphate exists

    4. Nitrogen is a constituent of creatine phosphate

    Which of the above statements are correct?

    1. 1, 2 and 3

    2. 2, 3 and 4

    3. 1 and 4

    4. 1, 2, 3 and 4

  8. Which one of the following could NOT be explained by the Darwin's Natural Selection Theory?

    1. Presence of Tasmanian wolf only in Tasmania having become extinct from the Australian mainland

    2. Giraffe has long neck and long legs

    3. Retention of characters of no use or vestigial organs

    4. In a forest, numerous young trees grow below the parent trees but many of them perish

  9. Match List I (Theories of evolution/inheritance) with List II (Proposed by) and select the correct answer:

    List-I List-II
    1. Catastrophism

    2. Inheritance of acquired characters

    3. Preformation

    4. Pangenesis

    1. Cuvier

    2. Lamarck

    3. Bonnet

    4. Darwin

    • A
    • B
    • C
    • D
      • 1
      • 2
      • 3
      • 4
      • 4
      • 3
      • 2
      • 1
      • 1
      • 3
      • 2
      • 4
      • 4
      • 2
      • 3
      • 1
  10. Which one of the following is NOT a vestigial structure in Homo sapiens?

    1. Epiglottis

    2. Pica semilunaris

    3. Third molar

    4. Pyramidalis muscle

  11. Choose the correct sequence of evolutionary events in one form of allopatric speciation, using the codes given below:

    1. Geographical isolation

    2. Ecological isolation

    3. Increased pre-mating reproductive isolation

    4. Increased genetic divergence

    5. Selection completed

      1. 3, 4, 2, 5

      2. 1, 4, 3, 5

      3. 3, 2, 4, 5

      4. 1, 2, 3, 5

  12. Evolution of unique groups of mammals in South America, Africa and Australia is an evidence for

    1. crustal movement

    2. continental drift

    3. glaciation

    4. geographical juxtaposition

  13. Consider the following statements: The Holarctic Region includes the subregions:

    1. Palearctic

    2. Nearctic

    3. Antarctic

    4. Ethiopean

    Which of the above statements are correct?

    1. 1 and 2

    2. 2 and 3

    3. 3 and 4

    4. 1 and 4

  14. The late Mesozoic Era (the Cretaceous Period) was characterised by

    1. rise of dinosaurs, rise of toothed birds and rise of flowering plants

    2. extreme specialization of reptiles, extinction of great reptiles and extinction of toothed birds

    3. rise of archaic mammals rise of dinosaurs and appearance of first toothed birds

    4. extinction of archaic mammals, rise of birds and appearance of first dinosaurs

  15. The cranial capacity of which one of the following pre-historic humans was almost the same as that of the modem man?

    1. Neanderthal man

    2. Peking man

    3. Java Ape man

    4. Australopithecus man