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प्रश्न
List two biotic components of a biosphere.
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उत्तर
Two biotic components of a biosphere are as follows:-
1. Producers or autotrophs
2. Consumers or heterotrophs
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संबंधित प्रश्न
Construct a long food chain.
Write one or two word for the following statement/definition :
Organisms which depend on the producers for food either directly or indirectly
One of the following is not a consumer. This one is :
(a) giraffe
(b) antelope
(c) algae
(d) alligator
Which of the following is not a producer?
(a) grass
(b) zooplankton
(c) phytoplankton
(d) paddy
Write the percentage of energy transferred from autotrophs to the next level in a food chain.
If 5 joules of energy is available at producer level (plants), then how much energy will be transferred to the lion in the following food chain?
Plants → Goat → Lion
If the energy available at the producer level in a food chain is 150 J, how much energy will be transferred to : tertiary consumer?
(a) 15 J
(b) 10 J
(c) 1.50 J
(d) 0.15 J
Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.
Assertion (A): The energy which passes to the herbivores does not come back to autotrophs.
Reason (R): The flow of energy in a food chain is unidirectional.
Study the picture given below showing three food chains (a), (b) and (c) and answer the following questions:
- Name the type of ecosystems that exist in food chains (b) and (c).
- The first trophic level in all food chains is producers. Why? What percentage of solar energy do these producers capture for their use?
- Why are the arrows shown in the diagram in one direction only and not vice versa? Justify.
