CBSE Class 12 Ecosystem Multiple Choice Questions with Answers. MCQ Questions Class 12 Ecosystem with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT MCQ questions Class 12 Ecosystem with Answers to know their preparation level.
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MCQ Questions Class 12 Ecosystem with Answers - Set - 1
Question 1:
Largest reservoir of sulphur is
(a) Atmosphere
(b) Rocks
(c) Ocean
(d) Lake
Correct Answer – (B)
Question 2:
These belong to the category of primary consumers
(a) Insects and cattle
(b) Eagle and snakes
(c) Water insects
(d) Snakes and frogs
Correct Answer – (A)
Question 3:
Which of the following pairs is mismatched?
(a) Tundra-permafrost
(b) Savanna-Acacia trees
(c) Praire-epiphytes
(d) Coniferous forest-evergreen trees
Correct Answer – (C)
Question 4:
Which of the following is called as a detrivore?
(a) An animal feeding on decaying organic matter
(b) An animal feeding on a plant
(c) A plant feeding on an animal
(d) An animal feeding on another animal
Correct Answer – (A)
Question 5:
Energy transferred from one trophic level to another
(a) 5%
(b) 10%
(c) 15%
(d) 20%
Correct Answer – (B)
MCQ Questions Class 12 Ecosystem With Answers
Question 6:
Which of the following is expected to have the highest value (gm/m²/yr) in a grassland ecosystem?
(a) Tertiary production
(b) Gross production
(c) Net production
(d) Secondary production
Correct Answer – (B)
Question 7:
The most abundant element present in the plants is
(a) nitrogen
(b) manganese
(c) iron
(d) carbon
Correct Answer – (D)
Question 8:
The pyramid of energy is always upright for any ecosystem. This situation indicates the fact that:
(a) producers have the lowest energy conversion efficiency
(b) carnivores have a better energy conversion efficiency
(c) energy, conversion efficiency is the same in all trophic levels
(d) herbivores have a better energy conversion efficiency than carnivores.
Correct Answer – (D)
Question 9:
Maximum absorption of rainfall water is done by
(a) Tropical deciduous forest
(b) Tropical evergreen forest
(c) Tropical savannah
(d) Scrule forest
Correct Answer – (B)
Question 10:
Given below is one of the types of ecological pyramids. This type represents
(a) Pyramid of numbers in a grassland
(b) Pyramid of biomass in a follow land
(c) Pyramid of biomass in a lake
(d) Energy pyramid in a spring
Correct Answer – (C)
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