What is primary productivity? Give brief description of factors that affect primary productivity.
What is primary productivity? Give brief description of factors that affect primary productivity.
It is defined as the amount of organic matter or biomass produced by producers per unit area over a period of time.
Primary productivity of an ecosystem depends on the variety of environmental factors such as light, temperature, water, precipitation, etc. It also depends on the availability of nutrients and the availability of plants to carry out photosynthesis.
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What is common in earthworm, soil mites and dung beetle in an ecosystem?
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The snakes are included under
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To eat and be eaten relationship is called as
To eat and be eaten relationship is called as
Choose correct food chain (GFC).
Assertion : In a food chain, members of successive higher levels are fewer in number.
Reason : Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.
Assertion : In a food chain, members of successive higher levels are fewer in number.
Reason : Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.
- [AIIMS 2003]