Ecosystem MCQs for NEET — Botany Questions with Answers

Practice free Ecosystem (Botany) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

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Mangrove plant live in:

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Explanation

Mangrove plants live in marshy areas along sea shores. These unique ecosystems are characterized by salt-tolerant trees and shrubs that thrive in coastal intertidal zones. Mangroves play a crucial role in protecting coastlines from erosion and providing habitat for a variety of marine life.

Which of the following is not possible in ecosystem where microflora is absent

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Which ofthe following is not included as the climax community of general process of succession ?

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Explanation

Phytoplanktones are not considered a climax community in the general process of succession. The climax community is typically more stable and resilient, often represented by forests, grasslands, or other complex ecosystems. Phytoplanktons are usually part of earlier successional stages in aquatic environments.

What is the composition of soil with high waterlogging capicity ?

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Explanation

Black soil, also known as loam soil, has a high water-holding capacity. This is because it contains a mix of sand, silt, and clay, which helps in retaining water and nutrients, making it suitable for areas prone to waterlogging.

All of the following are concerned with bad health of ecosystem, except

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Explanation

Ecosanitation, or ecological sanitation, is the correct answer as it is not associated with bad health of ecosystems. Ecosanitation is a sustainable approach to sanitation that aims to safely recycle nutrients back to the environment, reduce water pollution, and improve health. On the other hand, biomagnification, eutrophication, and jhum cultivation are processes that can negatively impact ecosystem health.

The most ecologically relevant environmental factor is:

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Explanation

1. Read page 221, XII NCERT

At the trophic level of consumers, the rate at which food energy is assimilated, is called:

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Explanation

Secondary production represents the formation of living mass of a heterotrophic population or group of populations over some period of time. It is the heterotrophic equivalent of net primary production by autotrophs.

The major reservoir for phosphorous is 

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Explanation

Read page 254, XII NCERT

Which of the following pyramids can never be inverted in a natural ecosystem?

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Explanation

Read page 249, XII NCERT

The earth is an open system with respect to

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Explanation

A constant input of energy is required to keep the stability of the ecosystem and overcome any entropy. This input is ultimately provided by the sun.

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