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Adivasis

A forest ecos...

Question

A forest ecosystem having a lot of green plants has some foxes, lions and rabbits in it.

(c) Name the link which is a predator as well as a prey.

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Solution

Fox is a predator as well as a prey. It eats rabbits as well as gets eaten by lion.

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Q. A forest ecosystem having a lot of green plants has some foxes, lions and rabbits in it.
(a) Write a food chain comprising all the four organisms mentioned above.
(b) Name (i) one herbivore, and (ii) two carnivores, in this food chain.
(c) Name the link which is a predator as well as a prey.
(d) Name (i) second trophic level, and (ii) third trophic level.
(e) Which link of this food chain can feed on second trophic level as well as third trophic level, independently?
(f) If the sun provides 1000 J of energy to the plants, then how much energy will be transferred to fox through the food chain.

Q. Look at the graph. It shows a typical variation of populations of predators (wolves, tigers etc.) and prey (deer, rabbits etc.) in a habitat such as a forest.

Answer these questions.
1. Why is the predator population always lower than the prey population?
2. Point A is the rainy season. Why is the prey population increasing?
3. Why does the predator population starts increasing after the increase in the prey population?
4. As the predator population increases, why does the prey population starts declining (point B)?
5. Why does the predator population now start to decrease (point C)?
6. Will the graph maintain the same shape if a calamity such as disease struck the prey and they died in large numbers? What do you expect will happen?

Q. A forest ecosystem having a lot of green plants has some foxes, lions and rabbits in it.

(e) Which link of this food chain can feed on the second trophic level as well as the third trophic level, independently?

Q. A forest ecosystem having a lot of green plants has some foxes, lions and rabbits in it.

(d) Name (i) second trophic level, and (ii) third trophic level.

Q. A forest ecosystem having a lot of green plants has some foxes, lions and rabbits in it.
Name (i) one herbivore, and (ii) two carnivores, in this food chain.

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