Semester Exam Review Test

Front

What is a population?

Back

A group of one species in one area.

Front

What are the roles of organisms in a marine food web?

Back

Primary consumer: ice algae, Secondary consumer: krill, Decomposer: fish.

Front

What happens to the population of prey if exponential growth occurs in the population of predators?

Back

The population of prey will most likely decrease quickly.

Front

What is the process called when lichens are replaced by grasses, shrubs, and forests after a volcanic eruption?

Back

Ecological Succession.

Front

What happens to biodiversity as an ecosystem progresses through ecological succession?

Back

The biodiversity increases.

Front

Define ecological succession.

Back

The process of change in the species structure of an ecological community over time.

Front

What is a primary consumer?

Back

An organism that eats producers (plants) in a food web.

Front

What is a secondary consumer?

Back

An organism that eats primary consumers in a food web.

Front

What is a decomposer?

Back

An organism that breaks down dead organic material, returning nutrients to the ecosystem.

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.