MCQ Questions for Class 12 Biology Chapter 14 Ecosystem with Answers Set-C

Ecosystem Class 12 Biology MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 12 Biology Chapter 14 Ecosystem with Answers Pdf free download. MCQ Questions for Class 12 Biology with Answers were prepared based on the latest exam pattern. We have Provided Ecosystem Class 12 Biology MCQs Questions with Answers to help students understand the concept very well.

Class 12 Biology Chapter 14 Quiz

Class 12 Biology Chapter 14 MCQ Online Test

You can refer to NCERT Solutions for Class 12 Biology Chapter 14 Ecosystem to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Ecosystem Class 12 Biology MCQ online test

Q1.	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.

Ans: herbivores have a better energy conversion efficiency than carnivores.

Q2.	Which of the following pairs is mismatched?
	A.Tundra-permafrost
	B.Savanna-Acacia trees
	C.Praire-epiphytes
	D.Coniferous forest-evergreen trees

Ans: Praire-epiphytes

Q3.	The most abundant element present in the plants is
	A.nitrogen
	B.manganese
	C.iron
	D.carbon

Ans: carbon

Q4.	These belong to the category of primary consumers
	A.Insects and cattle
	B.Eagle and snakes
	C.Water insects
	D.Snakes and frogs

Ans: Insects and cattle

Q5.	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

Ans: Gross production

Q6.	Largest reservoir of sulphur is
	A.Atmosphere
	B.Rocks
	C.Ocean
	D.Lake

Ans: Rocks

Q7.	Maximum productivity is found in
	A.Grassland
	B.Desert
	C.Ocean
	D.Tropical rain forest

Ans: Ocean

Q8.	Concentration of nitrogen remains constant by
	A.Nitrogen cycle
	B.Thundering and lightning
	C.Enzymes
	D.Both (a) and (b)

Ans: Both (a) and (b)

Q9.	In the phosphorus cycle, phosphate becomes available by weathering of rocks first to
	A.Consumers
	B.Producers
	C.Decomposers
	D.None of these

Ans: Producers

Q10.	If there was no CO₂ in the earth’s atmosphere, the temperature of the earth’s surface would be
	A.Same as the present
	B.Less than the present
	C.Higher than the present
	D.Depends on the amount of O₂ in the atmosphere

Ans: Less than the present

Q11.	Bacterial role in carbon cycle is
	A.Chemosynthesis
	B.Photosynthesis
	C.Breakdown of organic matter
	D.Assimilation of nitrogen compounds

Ans: Breakdown of organic matter

Q12.	Which important greenhouse gas, other than methane is being produced from the agricultural fields?
	A.Arsine
	B.Sulphur dioxide
	C.Ammonia
	D.Nitrous oxide

Ans: Nitrous oxide

Q13.	Zone of atmosphere near the ground is
	A.Troposphere
	B.Stratosphere
	C.Homosphere
	D.All of these

Ans: Troposphere

Q14.	CO₂ content of atmosphere is about
	A.6.5%
	B.3.334%
	C.0.34%
	D.0.034%

Ans: 0.034%

Q15.	Ultraviolet radiation from sunlight causes a reaction which produces
	A.O₃
	B.SO₂
	C.CO
	D.CH₄

Ans: O₃

Q16.	Mr. X is eating curd/yoghurt. For this food intake in a food chain he should be considerd as Occupying
	A.First trophic level
	B.Second trophic level
	C.Third trophic level
	D.Fourth trophic level

Ans: Second trophic level

MCQ Questions for Class 12 Biology

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MCQ Questions for Class 12 Biology Chapter 14 Ecosystem with Answers

MCQ Questions for Class 12 Biology Chapter 14 Ecosystem with Answers Set-C

Ecosystem Class 12 Biology MCQs Questions with Answers

Class 12 Biology Chapter 14 Quiz

Class 12 Biology Chapter 14 MCQ Online Test

Ecosystem Class 12 Biology MCQ online test

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NCERT Solutions for Class 12 Biology

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NCERT Solutions for Class 12 Biology

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