Which organisms are at the first trophic level in all types of food chains. Show with the help of 2 food chains.

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Solution

Producers (plants) and dead organisms or fecal matter are at the first trophic level in all types of chain.

Grass->Grasshopper->Frog->Snake->Hawk.
Dead organisms or fecal matter-> Woodlouse-> Black bird.

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Question 9
Organisms of a higher trophic level which feed on several types of organisms belonging to a lower trophic level constitute the

(a) food web
(b) ecological pyramid
(c) ecosystem
(d) food chain

Q. State the difference between the first trophic levels of detritus food chain and grazing food chain

Assertion : In a food chain members of successive higher levels are fewer in number.

Reason : Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.

Q. ___________ occupy first trophic level of the food chain.

Choose the correct one from the following statements

1. Each organism occupies one trophic level in a food chain.

2. A trophic level in a food chain may be occupied by any of the producers, herbivores, carnivores or decomposers

3. Top consumers in a food chain generally feed on secondary consumers.

4. GFC and DFC are the common food chains and the latter is having maximum energy than the first

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Which organisms are at the first trophic level in all types of food chains. Show with the help of 2 food chains.

Producers (plants) and dead organisms or fecal matter are at the first trophic level in all types of chain. Grass->Grasshopper->Frog->Snake->Hawk. Dead organisms or fecal matter-> Woodlouse-> Black bird.

Producers (plants) and dead organisms or fecal matter are at the first trophic level in all types of chain.

Grass->Grasshopper->Frog->Snake->Hawk.
Dead organisms or fecal matter-> Woodlouse-> Black bird.