20. Organisms and their environment Flashcards Preview

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Flashcards in 20. Organisms and their environment Deck (8)
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1

What are producers?

Organisms that produce their own organic nutrients usually using energy from sunlight.

2

Define primary consumers.

herbivores- that feed on PRODUCERS

3

Define secondary consumers.

predators that feed on primary consumers.

4

Define tertiary consumers.

predators that feed on secondary consumers.

5

Define decomposers.

Bacteria and fungi that feed off form dead and decaying organisms and undigested wastes

6

What is the source of all energy in food chain?

SUN

7

Define food web

A food web is a network of interconnected food chains

8

Define tropic levels.

Trophic levels describe the position of an organism in a food chain, web or pyramid