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प्रश्न
The first trophic level in a food chain is always a green plant. Why ?
उत्तर
Green plants always occupy the first trophic level because they are the producers. They convert the energy of the Sun into a usable form of energy for the next trophic level.
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संबंधित प्रश्न
What is biological magnification?
What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants?
Write an aquatic food chain.
A student went to study a local pond. In one part of the pond she noticed tadpoles scraping at some pond weed. In another part she saw a water beetle holding a tadpole in its jaws.
(a) Construct a food chain for the pond.
(b) How many links are there in this chain?
What is a 'food web'? Show its formation.
Which of the following statement is incorrect?
The following is a food chain that ends with human :
plants → bee → human
How do bees provide food for humans?
Will the levels of biological magnification be different at different levels of the ecosystem?
Which group of organisms are not constituents of a food chain?
- Grass, lion, rabbit, wolf
- Plankton, man, fish, grasshopper
- Wolf, grass, snake, tiger
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Study the picture given below showing three food chains (a), (b) and (c) and answer the following questions:
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- Why are the arrows shown in the diagram in one direction only and not vice versa? Justify.
