Question
What are primary consumers? can food chain present quaternary consumers without having secondary or tertiary consumers? can a tertiary consumer of one chain be a primary or secondary consumer of another chain?

Answers

Primary consumers are living beings that eat autotrophic beings, i.e., they eat the producers. Primary consumers always belong to the second tropic level of a chain.
A food chain cannot have consumers of superior orders without having the consumer of the inferior orders. A consumer however can participate in several different chains not always belonging to the same consumer order in each of them.   Your Comment






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