Practice test

Environmental ecology - Test Set 1

Review 20 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

20 questions

Questions and explanations

  1. Question 1

    Which of the following leaf modification occurs/occur in desert areas to inhibit water loss?
    1. Hard and waxy leaves
    2. Tiny leaves or no leaves
    3. Thorns instead of leaves
    Select the correct answer using the codes given below:
    1. 1 and 2 only
    2. 2 only
    3. 1 and 3 only
    4. 1, 2 and 3
    View explanation

    Sign In to See Explanations. Sign Up Here

  2. Question 2

    Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to
    1. Resist drought and increase absorptive area
    2. Toleratec extremes of pH
    3. Resist disease infestation
    Select the correct answer using the code given below
    1. 1 only
    2. 2 and 3 only
    3. 1 and 3 only
    4. 1,2 and 3
    View explanation

    Sign In to See Explanations. Sign Up Here

  3. Question 3

    With reference to the food chains in ecosystem, which of the following kinds of organism is/ are known as decomposer organism/organisms?
    1. Virus
    2. FUngi
    3. Bacteria
    Select the correct answer using the code given below
    1. 1 only
    2. 2 and 3 only
    3. 1 and 3 only
    4. 1,2 and 3
    View explanation

    Sign In to See Explanations. Sign Up Here

  4. Question 4

    Which of the following is/are unique characteristic/ characteristics of equatorial forests?
    1. Presence of tall, closely set trees with crowns forming a countinuous canopy.
    2. Coexistence of a large number of species.
    3. Presence of numerous varieties of epiphytes.
    Select the correct answer using the code given below
    1. 1 only
    2. 2 and 3 only
    3. 1 and 3 only
    4. 1,2,3
    View explanation

    Sign In to See Explanations. Sign Up Here

  5. Question 5

    Which one of teh following terms describes not only the physical space occupied by an organism, but also its functional role in the community of organisms?
    1. Ecotone
    2. Habitat
    3. Ecological niche
    4. Home range
    View explanation

    Sign In to See Explanations. Sign Up Here

  6. Question 6

    Recombinant DNA technology allows genes to be transferred
    1. across different species of plants
    2. from animals to plans
    3. from microorganisms to higher organisms
    select the correct answer using the codes given below.
    1. 1 only
    2. 2 and 3 only
    3. 1 and 3 only
    4. 1,2 and 3
    View explanation

    Sign In to See Explanations. Sign Up Here

  7. Question 7

    Consider the following:
    1. Star tortoise
    2. Monitor lizard
    3.Pygmy hog
    4. Spider monkey
    Which of the above are naturally found in India?
    1. 1,2 and 3 only
    2. 2 and 3 only
    3. 1 and 4 only
    4. 1,2,3 and 4
    View explanation

    Sign In to See Explanations. Sign Up Here

  8. Question 8

    Consider the following Animals
    1. Sea cow
    2. Sea horse
    3. Sea lion
    Which of the above is/are mammal/mammals?
    1. 1 only
    2. 1 and 3 only
    3. 2 and 3 only
    4. 1,2 and 3
    View explanation

    Sign In to See Explanations. Sign Up Here

  9. Question 9

    In the grasslands, trees do not replace the grasses as a part of an ecological succession because of
    1. Insects and fungi
    2. Limited sunlight and paucity of nutrients
    3. Water limits and fire
    4. None of the above
    View explanation

    Sign In to See Explanations. Sign Up Here

  10. Question 10

    Which 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, grassland
    View explanation

    Sign In to See Explanations. Sign Up Here

  11. Question 11

    With reference to ‘Eco-Sensitive Zones’, which of the following statements is/are correct?
    1. Eco-Sensitive Zones are the areas that are declared under the Wildlife (Protection) Act, 1972.
    2. The purpose of the declaration of Eco-Sensitive Zones is to prohibit all kinds of human activities in those zones except agriculture.
    Select the correct answer using the code given below.
    1. 1 only
    2. 2 only
    3. Both 1 and 2
    4. Neither 1 nor 2
    View explanation

    Sign In to See Explanations. Sign Up Here

  12. Question 12

    Which of the following have coral reefs?

    1.Andaman and Nicobar Islands
    2. Gulf of Kachchh
    3. Gulf of Mannar
    4. Sunderbans
    Select the correct answer using the code given below.
    1. 1, 2 and 3 only
    2. 2 and 4 only
    3. 1 and 3 only
    4. 1, 2, 3 and 4
    View explanation

    Sign In to See Explanations. Sign Up Here

  13. Question 13

    Lichens, which are capable of initiating ecological succession even on a bare rock, are actually a symbiotic association of
    1. algae and bacteria
    2. algae and fungi
    3. bacteria and fungi
    4. fungi and mosses
    View explanation

    Sign In to See Explanations. Sign Up Here

  14. Question 14

    Every year, a month long ecologically important campaign / festival is held during which certain communities / tribes plant saplings of fruit-bearing trees. Which of the following are such communities / tribes?
    1. Bhutia and Lepcha
    2. Gond and Korku
    3. Irula and Toda
    4. Sahariya and Agariya
    View explanation

    Sign In to See Explanations. Sign Up Here

  15. Question 15

    Which one of the following is the process involved in photosynthesis?
    1. Potential energy is released to form free energy
    2. Free energy is converted into potential energy and stored
    3. Food is oxidized to release carbon dioxide and water
    4. Oxygen is taken, and carbon dioxide and water vapour are given out
    View explanation

    Sign In to See Explanations. Sign Up Here

  16. Question 16

    Among the following organisms, which one does not belong to the class of other three?
    1. Crab
    2. Mite
    3. Scorpion
    4. Spider
    View explanation

    Sign In to See Explanations. Sign Up Here

  17. Question 17

    Which one of the following is the correct sequence of a food chain?
    1. Diatoms-Crustaceans-Herrings.
    2. Crustaceans-Diatoms-Herrings.
    3. Diatoms-Herrings-Crustaceans.
    4. Crustaceans-Herrings-Diatoms.
    View explanation

    Sign In to See Explanations. Sign Up Here

  18. Question 18

    Which of the following phenomena might have influenced the evolution of organisms?
    1. Continental drift
    2. Glacial cycles

    Select the correct answer using the code given below:
    1. 1 only
    2. 2 only
    3. Both 1 and 2
    4. Neither 1 nor 2
    View explanation

    Sign In to See Explanations. Sign Up Here

  19. Question 19

    Brominated flame retardants are used in many household products like mattresses and upholstery. Why is there some concern about their use?
    1. They are highly resistant to degradation in the environment.
    2. They are able to accumulate in humans and animals.

    Select the correct answer using the code given below:
    1. 1 only
    2. 2 only
    3. Both 1 and 2
    4. Neither 1 nor 2
    View explanation

    Sign In to See Explanations. Sign Up Here

  20. Question 20

    Consider the following:
    1. Bats
    2. Bears
    3. Rodents
    The phenomenon of hibernation can be observed in which of the above kinds of animals?
    1. 1 and 2 only
    2. 2 only
    3. 1, 2 and 3
    4. Hibernation cannot be observed in any of the above.
    View explanation

    Sign In to See Explanations. Sign Up Here