Ecosystem Roles UPSC Questions

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

Ecosystem Roles MCQ Questions


1.
What is the direction of energy flow in an ecosystem?
A.
Bidirectional
B.
Unidirectional
C.
Cyclical
D.
Reverse
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ANSWER :
B. Unidirectional
2.
Which of the following represents the correct order of trophic levels from base to top?
A.
Carnivores, Herbivores, Producers
B.
Herbivores, Producers, Carnivores
C.
Producers, Herbivores, Carnivores
D.
Producers, Carnivores, Herbivores
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ANSWER :
C. Producers, Herbivores, Carnivores
3.
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
4.
"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
5.
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
6.
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