Ch.4 Quiz 1

This component of biodiversity describes both the variety of species present and their abundance in an ecosystem.

• species

• functional

• genetic

• ecosystem

The variety of Earth's species

• biodiversity

• biome

• region

• habitat

Large geographic region characterized by a distinct climate and mix of species.

• niche

• habitat

• biome

• endemic

Species that can live in many different places, eat a variety of foods, and often tolerate a wide range of environmental conditions.

• specialist

• generalist

• endemic

• invasive

Why is genetic diversity a good thing?

• Genetic diversity ensures that all animals will go extinct.

• It's not really a good thing.

• Different genes allow animals to adapt to changing environments

Which of these correctly explains the "insurance hypothesis"

• A healthy ecosystem has many plants/animals that do the same job.

• Having a healthy predator population ensures that all the plants get eaten.

• Without key nutrients, crops will not grow.

• Humans need water to survive.

This type of animal occupies a narrow niche and may only be able to survive off one type of food or live in a specific place.

• primary consumer

• keystone

• generalist

• specialist

A________is a species way of life in its community and includes everything that affects it's survival and reproduction.

• habitat

• niche

• trophic level

• population

Changes to Earth's biodiversity do not impact human economies or survival.

• True

• False

Specialist species can respond more easily to changing environmental conditions than can generalist

• True

• False