ENERGY FLOWS IN FOOD CHAIN IS ALWAYS UNIDIRECTIONAL .JUSTIFY THE ABOVE STATEMENT.EXPLAIN HOW PESTICIDES ENTER A FOOD CHAIN SUBSEQUENTLY GET INTO OUR BODY.
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As it is unidirectional becz on each higher level energy goes on decreasing according to 10% law.
Pesticides first accumulate in water bodies and fish drink that water and that fish is eaten by man so it get in our body
Pesticides first accumulate in water bodies and fish drink that water and that fish is eaten by man so it get in our body
Answered by
3
aloha!
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◆ in a food chain 10% law is followed.
◆ it starts from producers, herbivores, carnivores, humans or scavengers.
◆ as the tropic levels never have a food chain in descending order, energy flow is unidirectional.
now,
◆ producers have some amount of harmful pesticides on them.
◆ these may be consumed by herbivores and then to the other levels of food chain.
◆ as they are nonbiodegradable, they do not reduce in the body of organisms and get accumulated, this is known as bioaccumulation.
◆ this gives rise to biological magnification, in which the harmful chemicals in the body of organisms keep increasing with higher tropic level.
>>-----------✫--------------<<
hope it helps :^)
>>-----------✫--------------<<
◆ in a food chain 10% law is followed.
◆ it starts from producers, herbivores, carnivores, humans or scavengers.
◆ as the tropic levels never have a food chain in descending order, energy flow is unidirectional.
now,
◆ producers have some amount of harmful pesticides on them.
◆ these may be consumed by herbivores and then to the other levels of food chain.
◆ as they are nonbiodegradable, they do not reduce in the body of organisms and get accumulated, this is known as bioaccumulation.
◆ this gives rise to biological magnification, in which the harmful chemicals in the body of organisms keep increasing with higher tropic level.
>>-----------✫--------------<<
hope it helps :^)
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