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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From which of the following detritus food chain will start ?

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Explanation

The detritus food chain begins with dead organic matter and is decomposed by microorganisms such as bacteria. Hence, the correct option is 'Bacteria'.

At Each trophic level, in which formenergyis lost ?

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Explanation

Energy is lost at each trophic level primarily in the form of heat due to metabolic processes. As organisms consume food and convert it into energy, a significant portion is lost as heat. This concept is based on the second law of thermodynamics, which states that energy transfer is not 100% efficient and that some energy is always lost as heat.

Which Source of eutrophication is the modern source of phosphorus ?

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Explanation

Modern sources of phosphorus that lead to eutrophication include detergents. Detergents often contain phosphates, which, when they enter water bodies through domestic wastewater, can result in the overgrowth of algae and subsequent eutrophication.

It helps in absorbtion of phosphorous ?

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Explanation

Mycorrhizae are symbiotic associations between fungi and plant roots that enhance the absorption of phosphorus. The fungi extend the root system's reach, allowing plants to access phosphorus more efficiently from the soil.

It- (I) Liver -----> Liver lobule (II) kidney -----> Uriniferous tubule (III) Ecology -----> X then What does"x" represent ?

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Explanation

In ecology, the term 'ecosystem' refers to a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. Hence, the correct match for Ecology (X) is Ecosystem.

X is source of y. but y never return to x, Than which option is wrong for x and y.

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In any of the ecosystem man can be....

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Explanation

In an ecosystem, humans can occupy different trophic levels. They can be primary consumers when they consume plants and secondary consumers when they consume animals. Therefore, humans can be both primary and secondary consumers, making the correct answer '1 & 3'.

If earth is considered a unit region then it can be compared to

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Explanation

An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. The Earth can be viewed as a large ecosystem where all living and non-living entities interact.

Who accepts the nutrient released in environment by decomposer ?

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Explanation

Producers, such as plants and algae, accept the nutrients released into the environment by decomposers. These nutrients are used for their growth and development, which in turn supports the entire food web.

If herbivores are "5" in number in the given food chain then, what willbe the total number of trophic layers in the it ?

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Explanation

The number of herbivores alone cannot determine the total number of trophic layers in a food chain. The complete structure of the food chain, including primary producers and various levels of consumers, needs to be known to predict the number of trophic layers.

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