Define primary consumers.

Define tertiary consumers.

Which one is the primary consumer?

The graph given below shows the variations in the population of producers, primary consumers and secondary consumers as well as the amount of dissolved mineral salts in a pond Which one of the following correctly matches each graph?

Assertion: Main source of energy for the grazing food chain is the sun. Reason: Producers can survive only by producing food from the sunlight and other inorganic substances. The movement of energy in other links of primary consumers, secondary consumers and tertiary consumers begin with the sun.

Define primary growth?

________________ is a primary consumer in pond ecosystem.

Which one of the following is a primary consumer in maize field ecosystem?

Define consumers.