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प्रश्न
The following statement is true or false :
In biology, human beings are called producers.
उत्तर
False. Green plants are known as producers.
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संबंधित प्रश्न
State with reason any two possible consequences of elimination of decomposers from the Earth.
List two important roles play in the environment by decomposers.
What are planktons?
One of the following is not a consumer. This one is :
(a) giraffe
(b) antelope
(c) algae
(d) alligator
Match the terms given in column I with the terms given in column II and column III having the same meaning :
| Column I | Column II | Column III |
| (1) Secondary consumer | Herbivore | 1st trophic level |
| (2) Primary consume | Autotroph | 3rd trophic level |
| (3) Producer | Carnivore | 4th trophic level |
| (4) Tertiary consumer | Large carnivore | 2nd trophic level |
Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.
The following statement is true or false :
Only 10 per cent of the light energy given by the sun is available for transfer at each higher trophic level in a food chain.
Explain why, a food chain usually cannot have more than three or four steps.
The food chain begins with the energy given by the ______.
Differentiate between herbivores and carnivores.
