first order consumers, definition of

First Order Consumers

1st Order Consumers are animals that eat plants. They are the first step in the food chain.

For instance:

First-order Consumer - the organism that eats the producer. 

Second-order Consumer - the organism that eats or derives nutrients from the first-order consumer. 

Grass (Producer) is eaten by the zebra (1st order Consumer) who is eaten by the lion (2nd order Consumer).

Related Tags: food chain

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