Short Answer TypeApart from being a part of the food chain, predators play other important roles. Mention any two such roles supported by examples.
How are productivity, gross productivity, net primary productivity and secondary productivity interrelated?
Productivity is the rate of biomass production.
Gross productivity is the rate of production of biomass by green plants per unit time per unit area. It is the total amount of productivity.
Net primary productivity is the difference between the gross primary productivity and the loss due to respiration.
Secondary productivity is the rate of formation of organic matter by the consumers.
Long Answer TypeShort Answer TypeLong Answer TypeExplain how does:
(a) a primary succession start on a bare rock and reach a climax community?
(b) the algal bloom eventually choke the water body in an industrial area?(a) Explain primary productivity and the factors that influence it.
(b) Describe how do oxygen and chemical composition of detritus control decomposition?
Short Answer TypeWith the help of a flow chart, show the phenomenon of biomagnification of DDT in an aquatic food chain.
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