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प्रश्न
What is meant by a primary consumer, secondary consumer and a tertiary consumer? Give one example of each.
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उत्तर
Herbivores that feed on plants are called primary consumers. Example: Insects.
Small carnivores that feed on other animals, especially herbivores, are called secondary consumers. Example: Frogs.
Large carnivores that feed on other animals, especially secondary consumers, are called tertiary consumers. Example: Birds.
Insects → Frogs → Birds
(Primary consumers) (Secondary consumers) (Tertiary consumers)
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संबंधित प्रश्न
Give reason to justify the following: Flow of energy in a food chain is unidirectional.
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
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Define decomposers.
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Give two differences between food chain and food web.
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(a) grass
(b) zooplankton
(c) phytoplankton
(d) paddy
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phytoplankton → zooplankton → X → Y
Name two zooplanktons.
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phytoplankton → zooplankton → X → Y
What could be X?
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Which organism in the above food chain is a (1) primary consumer, and (2) tertiary consumer?
Give one example of a food chain having four organisms. Below each organism write the three appropriate terms from the part (a) above which you think it represents.
Fill in the following blank with suitable word :
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(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.
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(b) Write a food chain comprising of all the four organisms mentioned.
(c) What is the general name of the food chains like the one written above?
(d) Name (i) secondary consumer (ii) producer (iii) tertiary consumer, and (iv) primary consumer, in the above food chain.
(e) If the tertiary consumer gets 0.2 J of energy from the secondary consumer, then how much energy was radiated by the sun to the producer?
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