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Food Chains, Food Webs, Energy Flows, and Trophic Levels

Choose one co...

Question

Choose one consumer each that belongs to the second and third trophic levels from the organisms given below:
Eagle, frog, tiger, rabbit, fox.

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Solution

The first trophic level is made of the producers, that is, the plants.
The second trophic level consists of herbivores, like the rabbit
The third trophic level consists of carnivores that eat the herbivores like the frog, eagle and tiger.

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Q. (a) Which of the following belong to the same trophic level?
Grass, Hawk, Rabbit, Frog, Deer
Give reason for your choice.
(b) What is the difference between the food habits of organisms belonging to the first and third trophic levels. Give one example each of the organisms belonging to first and third trophic levels.

Q. Name the organisms belonging to the second and the fourth trophic levels in the food chain comprising the following :
Frogs, Plants, Snakes, Hawk, Insects

Q. What is the difference between the food habits of organisms belonging to the first and the third trophic levels? Give one example each of the organisms belonging to these two trophic levels.

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.

1. Choose one consumer each that belongs to the second and third trophic levels from the organisms:

eagle,frog,tiger,rabbit,fox

2. Name the organism(s) belonging to fourth trophic level in the food chain comprising of :

snakes,insects,frogs, plants,hawks.

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