#ecosystem

BOTANY

Which of the following factors is most responsible for the regulation of population size in a natural ecosystem?

Predation plays a crucial role in regulating population size by preventing prey overpopulation and maintaining ecological balance. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.

Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Morphology and Anatomy of Flowering Plants, Topic: Plant structure and tissue systems.

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Loss of Biodiversity - Causes - Habitat Loss Overexploitation

Which of the following is a correct statement about habitat loss?

Habitat loss and fragmentation are the most important causes of biodiversity loss because they reduce and isolate natural habitats.

Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Loss of Biodiversity - Causes - Habitat Loss Overexploitation

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Nutrient Cycling - Carbon Phosphorus and Ecological Succession

Which of the following statements about decomposers is correct?

Decomposers, such as bacteria and fungi, break down dead organisms and recycle nutrients back into the ecosystem.

Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession

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Nutrient Cycling - Carbon Phosphorus and Ecological Succession

Which of the following statements about food webs is incorrect?

Food webs include decomposers, which play a crucial role in nutrient cycling and ecosystem balance.

Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession

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Nutrient Cycling - Carbon Phosphorus and Ecological Succession

Which of the following is an incorrect statement about food webs?

Food webs include decomposers, which play a crucial role in nutrient cycling and maintaining ecosystem balance.

Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession

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Nutrient Cycling - Carbon Phosphorus and Ecological Succession

Which of the following statements about the role of decomposers is correct?

Decomposers break down organic matter into inorganic substances, releasing nutrients back into the environment.

Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession

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Nutrient Cycling - Carbon Phosphorus and Ecological Succession

Which of the following is an example of a secondary consumer?

A frog is a secondary consumer because it feeds on insects, which are primary consumers.

Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Nutrient Cycling - Carbon Phosphorus and Ecological Succession

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Energy Flow - Food Chains Food Webs Trophic Levels

Which type of food chain is more dominant in a forest ecosystem?

In a forest ecosystem, the detritus food chain is more dominant because a large amount of energy flows through decomposers.