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प्रश्न
Which category of organisms forms the starting point of a food chain?
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उत्तर
Producers (green plants) form the starting point of a food chain.
संबंधित प्रश्न
In the following food chain, 20,000 J of energy was available to the plants. How much energy would be available to man in this chain?
Plants → Sheep → Man
What is meant by a primary consumer, secondary consumer and a tertiary consumer? Give one example of each.
At which trophic level a person is feeding when he is eating apple.
The sea water contains water beetles, tadpole, fish and weeds.
Which organism is a secondary consumer?
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Name one phytoplankton.
With the help of a food chain, explain how biological magnification of harmful chemicals can occur.
The ten per cent law is associated with
(a) transfer of energy from various trophic levels to decomposers in a food chain
(b) transfer of ATP energy into muscular energy
(c) transfer of chemical energy from one organism to another
(d) transfer of sun's energy to the organisms called producers.
The harmful chemical which is accumulating in human beings through food chain is :
(a) benzenehexachloride
(b) dichlorodiphenyltrichloroethane
(c) chlorofluorocarbon
(d) abscisic acid
In a food chain, the third trophic level is always occupied by
In the given food chain, suppose the amount of energy at the fourth trophic level is 5 kJ, what will be the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
