Biodiversity and Ecosystems Review

The variety of different organisms found in an ecosystem is called:

• a population

• biodiversity

• an ecosystem service

• symbiosis

Tags

NGSS.MS-LS2-5

Why are invasive species a problem?

• Invasive species are originally from an area and take over it.

• Invasive species are prey to many animals so they must keep large populations.

• Invasive species have no predators in their new ecosystems so they grow quickly and become very large.

• Invasive species keep the ecosystems in equilibrium by having large numbers.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

NGSS.MS-LS2-5

An ecosystem with a large number of individuals can have a low biodiversity.

• True, if there are large numbers of only a few species

• False, larger numbers mean more biodiversity

Tags

NGSS.MS-LS2-5

A rainforest has an abundance of different plant and animal species. This is an example of what?

• high biodiversity

• low biodiversity

• conservation of biodiversity

Tags

NGSS.MS-LS2-5

Which is the biggest threat to biodiversity?

• human activity

• diseases

• habitat alteration

• introduced species

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-5

What is an ecosystem?

• The area of land where animals live

• A community of insects that work together

• A community of organisms together with its environment

• The section of a terrarium where plants grow

Tags

NGSS.MS-LS2-3

If fish are caught faster than they can breed the population will _____________

• increase
• stay the same
• emigrate
• decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

If all the members of a species disappears from Earth, the species is said to be?

• Threatened
• Endangered
• Extinct
• Keystone species

Tags

NGSS.MS-LS4-1

The loss of a natural habitat is called?

• Habitat development
• biodiversity
• Pollution
• Habitat destruction

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which activity can disrupt provisioning services?

• Planting trees

• Overharvesting

• Recycling

• Composting

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-5