Food Chain

Trophic levels are formed by -

The correct order in the food chain of the various components of a terrestrial grass ecosystem is -

Which of the following are the primary consumers in an ecosystem? Select the correct answer from the codes given below: 1. Ants 2. Deer 3. Fox 4. Tiger Code:

In a food chain, man is:

In the marine environment, the main primary producers are:

Among the biotic components of the ecosystem, the producer system is –

Consider the following statements about eco-system: 1. The production at the autotroph level is said to be primary productivity. 2. The secondary productivity refers to the production at the heterotroph level. Of the above, the correct statement is/are:

Example of Lotic ecosystem is -

Given below are two statements one of labelled as Assertion (A) and the other as Reason (R). Assertion (A): Phytoplankton grow in abundance in the limnetic zone. Reason (R): Limnetic zone is open water zone, Select the correct answer from the code given below: Codes :

Which one of the following pairs is correctly matched?