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प्रश्न
DDT was sprayed in a lake to regulate breeding of mosquitoes. How would it affect the trophic levels in the following food chain associated with a lake? Justify your answer.
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उत्तर
- DDT being a non- biodegradable pesticide will enter the food chain from the first trophic level i.e Plankton.
- Non – biodegradable pesticides accumulate progressively at each trophic level. This phenomenon is known as biological magnification.
- HAWK will have the highest level of pesticide.
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संबंधित प्रश्न
In a food chain of frog, grass, insect and snake, assign trophic level to frog.
The first trophic level in a food chain is always a green plant. Why ?
The following statement is true or false :
Secondary consumers and tertiary consumers, both are carnivores.
Which of the following belong to the same trophic level?
Tree ; Frog ; Snake ; Grass ; Lizard
Can the organisms of any trophic level be removed without causing any damage to the ecosystem? Will the impact of removing all the organisms in a trophic level be different for different trophic levels?
The following is a food chain that ends with human :
plants → bee → human
How do bees provide food for humans?
What is ten per cent law? Explain with an example.
What would happen if an organism is removed from the food chain?
Which of the following is a logical sequence of food chain?
What is Autotrophs?
