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प्रश्न
List two main components of ecosystem?
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उत्तर
Following are the components of environment:-
(a) Biotic component
(b) Abiotic component
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संबंधित प्रश्न
Which of the following are always at the second tropic level of food chains?
Give reason to justify the following: The existence of decomposers is essential in a biosphere.
Which category of organisms forms the starting point of a food chain?
Which of the following are decomposers of dead organisms?
| Bacteria | Fungi | Viruses |
| (a) no | yes | yes |
| (b) yes | no | yes |
| (c) yes | yes | no |
| (d) yes | yes | yes |
Explain why, the flow of energy in the ecosystem is said to be unidirectional.
Which of the following limits the number of trophic levels in a food chain?
(a) insufficient food supply from producer level
(b) decrease in energy at higher trophic levels
(c) increase in the number of organisms at higher trophic levels
(d) accumulation of harmful chemicals at higher trophic levels
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.
Arrange the following in a correct sequence and form a food chain
Human → Insect → Algae → Fish
Food chains are very important for the survival of most species.
Matter and energy are two fundamental inputs of an ecosystem. Movement of:
Each level in the food chain is called a ______ level.
