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प्रश्न
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.
उत्तर
False. Only one per cent of light energy is trapped by plants, and of this, only 10 per cent is transferred at each trophic level in a food chain.
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संबंधित प्रश्न
List two biotic components of a biosphere.
What is biological magnification?
What will happen if we kill all the organisms in one trophic level?
Can the organisms of any trophic level be removed without causing any damage to the ecosystem? Will the impact of removing all the organisms in a trophic level be different for different trophic levels?
In a food chain, the third trophic level is always occupied by :
(a) carnivores
(b) herbivores
(c) decomposers
(d) producers
Which of the following group of organisms are not constituents of a food chain?
- grass, lion, rabbit, wolf
- plankton, man, fish, grasshopper
- wolf, grass, snake, tiger
- frog, snake, eagle, grass, grasshopper
The sea water contains water beetles, tadpole, fish and weeds.
Write a food chain comprising all the given organisms.
With the help of a food chain, explain how biological magnification of harmful chemicals can occur.
Bacteria and fungi are called decomposers.
______ obtained energy from the chemical breakdown of dead organisms.
