Competitive Exams: Zoology MCQs (Practice-Test 39 of 112)

  1. Consider the following statements:

    1. Under Wildlife (Protection) Act, 1972, only Central Government is empowered to declare any area in India as a Sanctuary or a National Park.

    2. Protection of wild animals is included in the Concurrent List in the

    Constitution of India.

    Which of the statements given above is/are correct?

    1. 1 only

    2. 2 only

    3. Both 1 and 2

    4. Neither 1 nor 2

  2. Which of the following are homologous organs?

    1. Wings of birds, flippers of whales and forearms of man

    2. Wings of butterfly, pterygium of flying squirrel and fins of flying fishes

    3. Tails of snake, scorpion and walllizard

    4. Lungs of rabbit, trachea of cockroach and book lungs of scorpion

  3. Consider the following statements: The conditions essential for the operation of the Hardy-Weinberg Law are that the

    1. Mating should be at random

    2. Mutation rate should be very high

    3. Individuals should be of unequal viability and fertility

    4. Population size should be very large

    5. Migrations should not occur

    Which of the statements given above are correct?

    1. 1, 2 and 3

    2. 1, 3 and 5

    3. 2, 3 and 5

    4. 1, 4 and 5

  4. Early terrestrial vertebrates appeared in

    1. Cambrian period

    2. Devonian period

    3. Pre-Cambrian period

    4. Ordovician period

  5. Match List I (Islands) with List II (Geographical Realms) and select the correct answer:

    List-I List-II
    1. Japan

    2. Greenland

    3. Madagascar

    4. Tasmania

    1. Australian

    2. Ethiopian

    3. Nearctic

    4. Palaearctic

    • A
    • B
    • C
    • D
      • 1
      • 2
      • 3
      • 4
      • 4
      • 2
      • 3
      • 1
      • 1
      • 3
      • 2
      • 4
      • 4
      • 3
      • 2
      • 1
  6. In contrast to continental islands, oceanic islands were originally devoid of

    1. Birds and amphibians

    2. Bats and terrestrial mammals

    3. Terrestrial mammals and amphibians

    4. Birds and terrestrial mammals

  7. Which one of the following groups of fossil animals are related to king crab of today and which is one of the most abundant of arthropod fossils?

    1. Cephalopods

    2. Brahciopods

    3. Bryozoans

    4. Trilobites

  8. Photochemical smog is a resultant of the reaction between

    1. NO2, O3 and Peroxyacetyl nitrate in the presence of sunlight

    2. CO, O2 and Peroxyacetyl nitrate in the presence of sunlight

    3. CO, CO2 and NO2 at low temperature

    4. High concentration of NO2, O3 and CO in the evening

  9. In the commercial seed production of Indian major carps, the product used for induced breeding is

    1. Ovatype

    2. Ovateem

    3. Ovapride

    4. Ovaprim

  10. In the lac insect the bulk of the lac is contributed by

    1. Adult males

    2. Female and males

    3. Females

    4. Adult males and nymphs

  11. Echinocnemus oryzae causes damage to the rice crop by feeding on

    1. Main roots

    2. Rootlets

    3. Stem

    4. Leaves

  12. Consider the following statements:

    1. The ecological pyramid of numbers is always upright

    2. The ecological pyramid of biomass can be upright or inverted

    Which of the statements given above is/are correct?

    1. 1 only

    2. 2 only

    3. Both 1 and 2

    4. Neither 1 nor 2

  13. Which one of the following is the correct Sequence of ecosystems in the order of decreasing productivity?

    1. Oceans, lakes, grasslands, mangroves

    2. Mangroves, oceans, grasslands, lakes

    3. Mangroves, grasslands, lakes, oceans

    4. Oceans, mangroves, lakes, grasslands

  14. Consider the following types of animals:

    1. Crustaceans

    2. Chaetognaths

    Which of the statements given above is/are correct?

    1. 1 only

    2. 2 only

    3. Both 1 and 2

    4. Neither 1 nor 2

  15. In the logistic model of population growth, unlike in the exponential growth model

    1. There is a limit to the maximum densities attained

    2. Growth rates decrease with increasing population density

    3. Death rates are lower than birth rates

    4. Growth rate is unaffected by population size