Environmental Ecology UPSC Questions

Environmental Ecology MCQ Questions

7.
Which component of the environment includes decomposers?
A.
Abiotic
B.
Symbiotic
C.
Biotic
D.
Energetic
ANSWER :
C. Biotic
8.
Which of the following is a micro-consumer?
A.
Lion
B.
Cow
C.
Earthworm
D.
Tiger
ANSWER :
C. Earthworm
9.
Which biome is known for having coniferous evergreen forests?
A.
Tundra
B.
Taiga
C.
Savannah
D.
Desert
ANSWER :
B. Taiga
10.
"If rainforests and tropical forests are the lungs of the Earth, then surely wetlands function as its kidneys."
Which one of the following functions of wetlands best reflects the above statement ?

UPSC - 2022

A.
The water cycle in wetlands involves surface runoff, subsoil percolation and evaporation.
B.
Algae form the nutrient base upon which fish, crustaceans, molluscs, birds, reptiles and mammals thrive.
C.
Wetlands play a vital role in maintaining sedimentation balance and soil stabilization.
D.
Aquatic plants absorb heavy metals and excess nutrients.
ANSWER :
D. Aquatic plants absorb heavy metals and excess nutrients.
11.
What is an ecotone?
A.
A plant species
B.
A type of forest
C.
A zone of junction between two ecosystems
D.
A dry area with less vegetation
ANSWER :
C. A zone of junction between two ecosystems
12.
What is meant by the term 'niche' in ecology?
A.
A small community
B.
A place of worship
C.
Functional role or place of a species in an ecosystem
D.
Habitat only
ANSWER :
C. Functional role or place of a species in an ecosystem