Detritus food chain.

How many of the following statements is /are correct about food chains ? (1 ) GFC is the major conduit of energy flow in an aquatic ecosystem. (2) Source of energy in the detritus food chain is not directly the sun (3) Detritus food chain may be connected to grazing food chain somewhere . (4) In a grazing food chain, the size of organisms always decreases at higher levels.

In the following questions , a statement of assertion (A) is followed by a statement of reason (R). Br A: In an aquatic ecosystem grazing food chain is the major conduit for energy flow R: Detritus food chain may be connected with the grazing food chain at some levels.

Read the following statements and select the correct ones. (i) A given species may occupy more than one trophic level in the same ecosystem at the same time. (ii) Productivity of an aquatic ecosystem is less than that of a terrestrial ecosystem. (iii) Producers constitute the first trophic level of a detritus food chain. A) i and ii B) ii and iii C) i and iii D) i, ii and iii

The detritus in detrivorous food chain represents the trophic level :

How do harmful chemicals enter the food chain ?

Grazing food chain

One of the following is not an example of prey-predator food chain

Given figure represents food chains of a deciduous woodland linked together to form a food web. Which of the following constitute first trophic level of the grazing food chain and the detritus food chain respectively ?

Select the incorrect food chain.

What is a food chain?