Competitive Exams: Zoology MCQs (Practice-Test 98 of 112)

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1. Match List I (Type of egg) with list II (Group of animals) and select the correct answer using the codes given below:

   List-I	List-II
   Isolecithal egg Moderately telolecithal egg Telolecithal egg Centrolecithal egg	Amphibia Cephalochordata Insects Bony fishes

   • A
   • B
   • C
   • D
   1. • 2
      • 1
      • 3
      • 4
   2. • 2
      • 1
      • 4
      • 3
   3. • 1
      • 4
      • 3
      • 2
   4. • 3
      • 2
      • 4
      • 1

2. match List I (Structure) with List II (Availability) and select the correct answer using the codes given below:

   List-I	List-II
   Amnion Primitive streak Dorsal lip of blastopore Zona radiata	Mammalian ovum Amphibian gastrula Chick's gastrula Reptilian embryo

   • A
   • B
   • C
   • D
   1. • 4
      • 3
      • 1
      • 2
   2. • 4
      • 3
      • 2
      • 1
   3. • 3
      • 4
      • 2
      • 1
   4. • 3
      • 4
      • 1
      • 2

3. Match List I (Foetal membrane) with list II (function) and select the correct answer using the codes given below:

   List-I	List-II
   Amnion Chorion Yolk sac Allantois	Fluid filled sac Outer protective layer Nutritive sac Vascularised respiratory organ

   • A
   • B
   • C
   • D
   1. • 3
      • 4
      • 2
      • 1
   2. • 1
      • 2
      • 3
      • 4
   3. • 4
      • 2
      • 1
      • 3
   4. • 1
      • 3
      • 2
      • 4

4. Amnion and allantois are found in

   1. fish, frog, fowl and fox

   2. frog and fish

   3. fowl and fox

   4. fox, frog and fowl

5. A. I. Oparin postulated that colloidal bodies arose in the. Seas during the primordial stage of the earth. He referred to them as

   1. protobionts

   2. coacervate droplets

   3. microspheres

   4. spherules

6. The following processes are seen in the living cell:

   1. Transcription

   2. Configuration

   3. Translation

   4. Replication

   The correct sequence in which these occur within a cell to form enzymes leading to the adaptive potential of an organism is

   1. 1, 4, 3, 2

   2. 4, 1, 2, 3

   3. 1, 4, 2, 3

   4. 4, 1 3, 2

7. Serological evidence of organic evolution is confirmed on the basis of the

   1. a chain of haemoglobin from different species

   2. β chain of haemoglobin from different species

   3. molecular weight of haemoglobin from different species

   4. haem content of haemoglobin from different species

8. Morphologically identical natural populations that are reproductively isolated are called

   1. polytypic species

   2. subspecies

   3. sibling species

   4. ecotypic species

9. Match list I (Fossil) with list 11 (Era/Period/Epoch) and select the correct answer using the codes given below:

   List-I	List-II
   Trilobites Horses Plesiosaurus Ostracoderms	Mesozoic Tertiary Devonian Cambrian

   • A
   • B
   • C
   • D
   1. • 2
      • 4
      • 3
      • 1
   2. • 2
      • 4
      • 1
      • 3
   3. • 4
      • 2
      • 3
      • 1
   4. • 4
      • 2
      • 1
      • 3

10. Consider the following statements: Ecological dominants are those species that

    1. exert major controlling influence

    2. live in a community

    3. affect the environment of all other species

    4. control the energy flow

    Which of the above statements is/are correct?

    1. 1 alone

    2. 1, 3 and 4

    3. 2 alone

    4. 1, 2, 3 and 4

11. Similar niches in different communities or in different regions are commonly occupied by species possessing similar habits, adaptations and adjustments. Such species are called

    1. ecological equivalents

    2. ecotypes

    3. ecological dominants

    4. diverse species

12. Which one of the following statements is NOT true about energy flow?

    1. Energy flow is greatly reduced at each successive trophic level from producers to herbivores and then to carnivores

    2. The energy captured by the autotrophs does not revert back to solar input

    3. There is uni4irectional flow of energy

    4. The pyramids of energy are both top right and inverted

13. Ratios between energy flow at different points along the food chains when expressed as percentages, are called

    1. energy flow efficiencies

    2. ecological efficiencies

    3. relative ratio of energy flow

    4. ecological gradients

14. Productivity is the amount of organic matter produced

    1. per day

    2. per unit area per unit time

    3. during photoperiod of the day

    4. per unit area in twelve hours of photoperiod

    5. The total output of photosynthesis, including the organic

15. The total output of photosynthesis, including the organic matter used up in respiration during the period of measurement, is called

    1. net primary productivity

    2. gross primary productivity

    3. net community productivity

    4. secondary productivity