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Ecosystems — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYEcosystems3 Marks
Question
  1. What is primary productivity? Why does it vary in different types of eco - systems?
  2. State the relation between gross and net primary productivity.
✓

Answer

  1. Production of biomass/energy per unit area in a given time (per year) by plants during photosynthesis.

Depends upon - plant species inhabiting a particular area, environmental factors availability of nutrients, photosynthetic capacity of plants.

  1. GPP – R = NPP.

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