Ecological Classification and Food Chains

A set of vocabulary flashcards covering key concepts related to ecological classification, food chains, and energy flow in ecosystems.

Diatom

A type of algae that serves as a primary producer in aquatic ecosystems.

Trophic Level

The position an organism occupies in a food chain.

Autotroph

Also known as a producer, it converts sunlight and CO2 into organic material.

Heterotroph

An organism that cannot produce its own food and must consume other organisms.

Primary Consumer

Heterotrophs that feed on producers; typically herbivores.

Secondary Consumer

Heterotroph that feeds on primary consumers; also known as carnivores.

Tertiary Consumer

A heterotroph that feeds on other carnivores.

Decomposer

Organisms that break down dead plant or animal matter, releasing nutrients back into the ecosystem.

Food Chain

A linear representation of feeding relationships in a community.

Food Web

Includes multiple food chains in an ecosystem, showing the complex feeding relationships.