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प्रश्न
In a food chain consisting of grass, frog, bird and insects, where will the concentration of the harmful chemicals be maximum?
उत्तर
The bird in the food chain will have the maximum concentration of harmful chemicals among the given organisms, because it lies at the highest trophic level
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संबंधित प्रश्न
The following statement is true or false :
In biology, human beings are called producers.
Name one decomposer.
Consider the food chain :
Grass → Deer → Lion
What will happen if all the lions are removed from the above food chain?
In a food chain, the third trophic level is always occupied by :
(a) carnivores
(b) herbivores
(c) decomposers
(d) producers
The decomposers in an ecosystem ______.
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.
How much energy will be available to hawks in the food chain comprising hawk, snake, paddy and mice, if 10,000 J of energy is available to paddy from the sun?
The surface of water in a lake appears green due to a layer of tiny free-floating organisms X on its surface. The lake water also contains organisms like water beetle, fish and tadpole. The sun shines over the lake water and provides energy for the functioning of this lake ecosystem.
(a) What could organisms X be?
(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?
"Energy flow in food chains is always unidirectional". Justify this statement. Explain how the pesticides enter a food chain and subsequently get into our body.
If 100 J energy is available at the producer level in a food chain then the energy available to the secondary consumer will be ______.
