In an ecosystem,the vertical distribution of different species occupying different levels is called.

Given below are two statements:
Statement I: The primary source of energy in an ecosystem is solar energy.
Statement II: The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).
In light of the above statements, choose the most appropriate answer from the options given below:

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Match List-I with List-II:

List-I (Concepts)	List-II (Explanation)
(A) Standing state	(IV) Amount of mineral nutrients in the soil at a given time
(B) Secondary productivity	(II) Rate of formation of organic matter by consumers
(C) Standing crop	(III) Mass of living matter in a trophic level at a given time
(D) Net primary productivity	(I) Available biomass for the consumption of heterotrophs

Choose the correct answer from the options given below:

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In an ecosystem if the Net Primary Productivity (NPP) of first trophic level is 100x (kcal m^-2)yr^-1, what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?

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Which of the following is/are example(s) of a lotic ecosystem?

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Identify the statement which are not true for the natural ecosystem
(A) Grassland and desert are example of terrestrial ecosystem.
(B) Oceans and rivers are man-made ecosystems.
(C) Wetland and estuary are examples of aquatic ecosystem.
(D) Crop fields and aquarium are natural ecosystems.
Choose the correct answer from the option given below

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In an ecosystem, the vertical distribution of different species occupying different levels is called.

The Correct Option is B

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