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प्रश्न
What is meant by bioconcentration of pesticides
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उत्तर
The increase in the concentration of harmful chemical substances, such as pesticides, in the body of living organisms at each trophic level of a food chain is called bioconcentration of pesticides.
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संबंधित प्रश्न
Why are green plants called producers?
Which of the following constitute a food-chain?
What is biological magnification?
Consider the food chain :
Grass → Deer → Lion
What will happen if all the lions are removed from the above food chain?
At which trophic level a person is feeding when he is eating fish.
Write one or two word for the following statement/definition :
Organisms which depend on the producers for food either directly or indirectly
Which of the following is not a producer?
(a) grass
(b) zooplankton
(c) phytoplankton
(d) paddy
Give one example of a food chain having four organisms. Below each organism write the three appropriate terms from the part (a) above which you think it represents.
Calculate the amount of energy that will be available to big fish in the following food chain, if 10,000 J of energy is available to small algae from the sun :
Small algae → Zooplankton → Fish → Big fish
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?
Arrange the following in a correct sequence and form a food chain
Human → Insect → Algae → Fish
Give one example of a food chain in an aquatic ecosystem?
Write the importance of the food chain.
If 100 J energy is available at the producer level in a food chain then the energy available to the secondary consumer will be ______.
Which of the following is an autotroph?
The food chain begins with the energy given by the ______.
Animals that eat both plants and animals are called as Carnivores.
In the given food chain, suppose the amount of energy at the fourth trophic level is 5 kJ, what will be the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
Assertion (A): The energy which passes to the herbivores does not come back to autotrophs.
Reason (R): The flow of energy in a food chain is unidirectional.
