8.L.3 Ecology EOG review

Front

What is the role of nitrogen-fixing bacteria in the ecosystem?

Back

They convert atmospheric nitrogen into molecules that other organisms can use.

Front

What happens to energy as it moves through an energy pyramid?

Back

Energy decreases as it is lost as heat to the environment.

Front

What type of relationship exists between organisms of two different species that live together in direct contact?

Back

Symbiotic relationship.

Front

How does a drought affect an ecosystem?

Back

It affects all organisms in a particular ecosystem.

Front

What factor was most likely affecting the fish when half of them were removed from a tank?

Back

Space.

Front

Define an ecosystem.

Back

An ecosystem is a community of living organisms interacting with their physical environment.

Front

What is a food chain?

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

Front

Explain the concept of carrying capacity.

Back

Carrying capacity is the maximum number of individuals of a species that an environment can support sustainably.

Front

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

Back

A food web consists of many interconnected food chains, showing how energy and nutrients flow through an ecosystem.

Front

Define mutualism.

Back

Mutualism is a symbiotic relationship where both species benefit from the interaction.