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NEETBotanyEcosystem

How does primary productivity depend on the plant species and environmental factors?

Options

  1. AIt is independent of the plant species and environmental factors
  2. BIt varies in different types of ecosystems
  3. CIt depends on the availability of nutrients and photosynthetic capacity of plants
  4. DNone of the above

Correct answer

B. It varies in different types of ecosystems

Step-by-step solution

A constant input of solar energy is the basic requirement for any ecosystem to function and sustain. Primary production is defined as the amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis. It is expressed in terms of weight (g m–2) or energy (kcal m–2). The rate of biomass production is called productivity. It is expressed in terms of gm–2 yr –1 or (kcal m–2) yr–1 to compare the productivity of different ecosystems. It can be divided into gross primary pro

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