Ecosystem Roles UPSC Questions

General Issues on Environmental Ecology, Bio-diversity & Climate Change

Ecosystem Roles MCQ Questions


7.
Which food chain starts with dead organic matter?
A.
Grazing food chain
B.
Detritus food chain
C.
Inverted food chain
D.
Pyramid food chain
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ANSWER :
B. Detritus food chain
8.
"Biorock technology" is talked about in which one of the following situations ?

UPSC - 2022

A.
Restoration of damaged coral reefs
B.
Development of building materials using plant residues
C.
Identification of areas for exploration/extraction of shale gas
D.
Providing salt licks for wild animals in forests/protected areas
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ANSWER :
A. Restoration of damaged coral reefs
9.
What is the main source of energy for the first level consumers in the grazing food chain?
A.
Dead organic matter
B.
Detritus
C.
Living plant biomass
D.
Fungi
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ANSWER :
C. Living plant biomass
10.
Consider the following kinds of organisms:
1. Bat
2. Bee
3. Bird
Which of the above is/are pollinating agent/agents?
UPSC - 2012
A.
1 and 2 only
B.
2 only
C.
1 and 3 only
D.
1, 2 and 3
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ANSWER :
D. 1, 2 and 3
11.
Consider the following kinds of organisms:
1. Bacteria
2. Fungi
3. Flowering plants
some species of which of the above kinds of organisms are employed as biopesticides?
UPSC - 2012
A.
1 only
B.
2 and 3 only
C.
1 and 3 only
D.
1, 2 and 3
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ANSWER :
D. 1, 2 and 3
12.
Which of the following statements is true about a food web?
A.
It traces only one pathway of food
B.
It provides multiple pathways for energy flow
C.
It contains only carnivores
D.
It is a linear representation of food transfer
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ANSWER :
B. It provides multiple pathways for energy flow