Ecological Principles-Ecosystem Ecology [CSIR (Council of Scientific & Industrial Research) Life Sciences]: Questions 1 - 4 of 13

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Question 1

Appeared in Year: 2011

Question MCQ▾

Which of the following statements about the concentration of CO2 in the Earth՚s atmosphere is true? (December)

Choices

Choice (4)Response

a.

It has steadily increased since the formation of the Earth՚s atmosphere

b.

It has steadily decreased since the formation of the Earth՚s atmosphere

c.

It was the highest in the very early atmosphere of the Earth

d.

Its level today are the highest in the Earth՚s history

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Question 2

Appeared in Year: 2014

Question MCQ▾

Which of the following is the correct decreasing order for the rate of decomposition of litter constituents? (December)

Choices

Choice (4)Response

a.

Lignin, phenol, hemicellulose, cellulose

b.

Cellulose, hemicellulose, phenol, lignin

c.

Hemicellulose, cellulose, phenol, lignin

d.

Hemicellulose, cellulose, lignin, phenol

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Question 3

Appeared in Year: 2018

Question MCQ▾

Individuals occupying a particular habitat and adapted to it phenotypically but not genotypic ally are known as (June)

Choices

Choice (4)Response

a.

Ecophenes

b.

Cenospecies

c.

Ecotypes

d.

Ecospecies

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Question 4

Appeared in Year: 2018

Question MCQ▾

Which one of the following is the correct increasing order for the daily net primary productivity (NPP) per unit leaf area in different ecosystems? (December)

Choices

Choice (4)Response

a.

Tropical forests Temperate forests Deserts

b.

Temperate forests Tropical forests Deserts

c.

Deserts Temperate forests Tropical forests

d.

Deserts Tropical forests Temperate forests

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