APES Unit 2 Review

Front

What is a keystone species?

Back

An organism that keeps the food web stable.

Front

What two variables define terrestrial biomes?

Back

Temperature and precipitation.

Front

What process do plants use to convert inorganic nitrogen compounds into organic compounds?

Back

Assimilation.

Front

What type of relationship is exemplified by the cattle egret following herds of cattle?

Back

Commensalism.

Front

What is a herbivore?

Back

An organism that only eats plants.

Front

What is the role of producers in an ecosystem?

Back

Producers convert solar energy into chemical energy through photosynthesis.

Front

Define biodiversity.

Back

The variety of life in a particular habitat or ecosystem.

Front

What is the significance of the nitrogen cycle?

Back

It is essential for converting nitrogen into forms usable by living organisms.

Front

What is the difference between a food chain and a food web?

Back

A food chain is a linear sequence of organisms, while a food web is a complex network of interconnected food chains.

Front

What is the primary source of energy for ecosystems?

Back

The sun.