Environment, Ecology & Biodiversity MCQs

Environment, Ecology & Biodiversity Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations.

71. Which of the following statements are correct about Temperate Deciduous Forest?
1) Extends over Central and Southern Europe, Eastern North America, Western China, Japan, New Zealand, etc.
2) Moderate average temperature and scant rainfall.
Select the correct answer from the codes given below:

[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 & 2

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72. Which of the following statements are correct about the Tropical rain forest?
1) Temperature and rainfall high.
2) Tropical rainforest covers about 7% of the earth’s surface & 40% of the world’s plant and animal species.
3) Epiphytic plants are absent.
Select the correct answer from the codes given below:

[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3

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73. Which of the following is/are the characteristics of an ecotone?
1. Ecotone may be very narrow or quite wide.
2. It is a a zone of tension as it has the conditions intermediate to the adjacent ecosystems.
3. An ecotone which is well developed may contain some organisms which are entirely different from that of the adjoining communities.
Select the correct option from the codes given below:

[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3

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74. Which of the following is the study of the interactions among a collections of species that inhabit the same geographic area?

[A] Ecosystem ecology
[B] Community ecology
[C] Population ecology
[D] None of the above

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75. Which of the following statements are correct regarding food chain and food web?
1. A food web shows all possible transfers of energy and nutrients among the organisms in an ecosystem, whereas
a food chain traces only a single pathway of the food.
2. If any of the intermediate food chain is removed, there is no major effect on the succeeding links.
Select the correct option form the codes given below:

[A] only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 & 2

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76. Which of the following statements are correct?
1. Gaseous Cycles are those where the reservoir is the atmosphere or the hydrosphere.
2. Sedimentary Cycle are those where the reservoir is the earth’s crust.
Select the correct option from the codes given below:

[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 & 2

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77. Which of the following are the ways in which nitrogen fixation on earth can take place?
1. By microorganisms like bacteria and blue-green algae.
2. By man, using industrial processes like fertilizer factories.
3. To a limited extent by atmospheric phenomenon such as thunder and lighting.
Select the correct option from the codes given below:

[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3

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78. Succession is characterized by which of the following characteristics?
1) Decreased productivity.
2) The shift of nutrients from the reservoirs.
3) Increased diversity of organisms with an increase in the niche development
4) A gradual decline in the complexity of food webs.
Select the correct option from the codes given below:

[A] Only 1 & 3
[B] Only 1 & 4
[C] Only 2 & 3
[D] Only 1, 2 & 4

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79. Which of the following statements are correct about tropical moist deciduous forests?
1. Moist deciduous forests are found throughout India except in the western and the north-western regions.
2. The trees of tropical moist deciduous forests are tall, have broad trunks, branching trunks and roots to hold them firmly to the ground.
Select the correct option from the codes given below:

[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 & 2

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80. Which of the following are the climatic condition of tropical dry evergreen forests?
1. Annual rainfall in these forests is 100 cm.
2. The mean humidity is about 75 per cent.
3. The mean annual temperature is about 35°C.
Select the correct option from the codes give below:

[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3

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