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NEET Ecosystem PYQs with Solutions

43 previous year questions from Ecosystem (NEET UG Biology) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

43 questionsBiology2026Answers + solutions

About Ecosystem PYQs

Ecosystem has 43 previous year questions in the Quantrex Academy NEET UG Biology bank. The 43 questions in this list come from MHT CET Medical (43), spanning 2026. Each question opens on its own page with the options, the correct answer and the worked solution where available.

NEET Ecosystem PYQs with Solutions

About Ecosystem PYQs

Questions by year (this list)

Ecosystem questions with solutions

Some amount of carbon dissolved into oceanic water remains as sediments of carbon in the sea in the form of __________ and is removed from circulation.

Which one of the following pyramid in oceanic ecosystem is inverted?

What do you mean by sere?

Which one of the following is a detritivore?

Arctic tundra, coniferous forest and grassland are examples of __________.

Which of the following are functional units of an ecosystem? A. Productivity. B. Spatial pattern. C. Nutrient cycling. D. Energy flow. E. Decomposition.

The saprotrophs are most essential in ________ food chain.

Which of the following correctly explains Net Primary Productivity?

Given below are two statements regarding ecological succession. Statement I: There is a change in the diversity of species of organisms. Statement II: There is an increase in the

Who among the following feed on producers as well as consumers?

Which of the following statements is FALSE about the Phosphorus Cycle?

According to your opinion, 'decomposition of waste and detoxification' are examples of which type of ecosystem service from the following?

Given below are two statements. Statement I - Exchange of phosphorus between organism and the environment is very high. Statement II - Atmospheric inputs of carbon through

Which one of the following processes does NOT help in nutrient cycling?

Choose the INCORRECT statement with respect to Pyramid of energy.

Which one of the following is a sedimentary ecological cycle?

Identify the correct sequence of processes in the decomposition of organic matter. A. Humification B. Fragmentation C. Catabolism D. Leaching

Which of the following statements is incorrect about ecological pyramids?

Ecosystem services are

------------------- constitutes a large regional terrestrial unit delimited by a specific climatic zone having major vegetation zone and the associated fauna.

Long-term storage places of carbon in the form of fossil fuel are known as ___________.

Nature of change in community during succession is __________

Which one of the following is the most important services provided by an ecosystem?

The process of degradation of humus by soil microbes to release inorganic nutrients is called as --------------.

Given below are two statements related to the ecological pyramid. Statement (I): Ecological pyramid assumes a simple food chain, something that never exists in nature. Statement

Which are the pioneer species in hydrarch succession of plants?

In secondary succession, the species that invades depends on the following EXCEPT:

Every organism occupies a place in the ecological community according to the source of obtaining food. It is called ____ level.

The annual net primary productivity of the whole biosphere is approximately 170 billion tonnes. Of this, the productivity of all land-based ecosystems is about ____ billion tonnes.

Given below are two statements regarding carbon and phosphorus cycles. Statement (I): Atmospheric inputs of phosphorus through rainfall are much smaller than carbon inputs.

Match List I with List II List I (Process of decomposition) List II (Explanation) (A). Leaching (I). Bacterial and fungal enzymatic degradation of detritus (B). Catabolism (II).

The individual transitional communities during ecological succession are called ________ communities.

Both hydrarch and xerarch successions lead to ___ conditions.

The pyramid that CANNOT be inverted in a stable ecosystem, is the pyramid of

Which one of the following statements is INCORRECT about the phosphorus cycle?

Succession in water ultimately results in __________ condition.

The available biomass for the consumption, to heterotrophs is ----------------.

Secondary succession takes place on/in ----------------

Which of the following is considered as the main ecological service?

Which one of the following is NOT a limitation of ecological pyramids?

Carbon present in fossil fuel is stored for the long-term in places called ____.

The available biomass after respiration of producers and other plant losses is __________.

In a food chain of Grass - Deer - Leopard, if 1000 Joules of energy is available at the producer level, then how much energy will be received by leopard ?

Main Ecosystem list

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