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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?
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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
Which of the following are always at the second tropic level of food chains?
What is biological magnification?
Draw the food chain with four trophic levels.
Consider the food chain :
Grass → Deer → Lion
What will happen if all the lions are removed from the above food chain?
Write down a food chain in the sea.
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?
Write one or two word for the following statement/definition :
Organisms which depend on the producers for food either directly or indirectly
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.
One of the following is not a consumer. This one is :
(a) giraffe
(b) antelope
(c) algae
(d) alligator
The sea water contains water beetles, tadpole, fish and weeds.
Which organisms in the food chain are herbivore, and carnivores?
The sea water contains water beetles, tadpole, fish and weeds.
Which organism is a secondary consumer?
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Name one phytoplankton.
Fill in the following blank with suitable word :
Grass → ........... → Human
Fill in the following blank with suitable word :
Plants → Antelope → ............
What is ten per cent law? Explain with an example.
If the energy available at the producer level in a food chain is 150 J, how much energy will be transferred to : tertiary consumer?
(a) 15 J
(b) 10 J
(c) 1.50 J
(d) 0.15 J
What would happen if an organism is removed from the food chain?
A food chain comprising birds, green plants, fish and man. The concentration of harmful chemical entering the food chain will be maximum in ______.
In the following food chain, only 2J of energy was available to the peacocks. How much energy would have been present in Grass? Justify your answer.
GRASS → GRASS HOPPER → FROG → SNAKE → PEACOCK
Which statement is correct with respect to the food chain?
