Ecosystem Unit Review

A producer gets energy from _______ and converts it into food.

• dead organic matter

• primary consumers

• the Sun

• secondary consumers

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Consider the energy pyramid.

Why are there very few organisms toward the top of the pyramid?

• Organisms at the top of the pyramid can only generate energy directly from the sun.

• There is much less energy available at the top of the pyramid.

• Organisms at the top of the pyramid are preyed upon by many other organisms.

• There is too much energy available at the top of the pyramid.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

The number and variety of organisms is _____________________________.

• eutrophication

• conservation

• biodiversity

• urbanization

Tags

NGSS.MS-LS2-5

What will most likely happen to a native species if an exotic species outcompetes it for food?

• The native species will become extinct.

• The native species will adapt to less food.

• The native species will find another food source.

• The native species will use the exotic species for food.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of the following might decrease the amount of water available in an ecosystem?

• spilling oil

• dumping sewage

• constructing a dam

• producing acid rain

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-5

Which term best describes the number and variety of organisms in a given area during a specific period of time?

• carrying capacity

• biodiversity

• succession

• eutrophication

Tags

NGSS.MS-LS2-5

How does an increase in the human population affect ecosystems?

• A larger human population increases Earth's biodiversity.

• A larger human population has a greater need for natural resources.

• A larger human population produces more natural resources for living things.

• A larger human population helps matter cycle through ecosystems more quickly.

Tags

NGSS.MS-ESS3-4

The diagram shows a large ecosystem surrounding a pond.

How might animals in the ecosystem be harmed by the human activity shown in the diagram?

• Many animals species might be killed on the road.

• Some animal species may be able to travel more easily.

• Animals species may have to compete for food resources.

• Additional resources might be created for animal species.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What does biodiversity indicate about an ecosystem?

• the location of the ecosystem

• the overall size of the ecosystem

• the ability of the ecosystem to survive change

• the identity of the organisms that began ecological succession in the ecosystem

Tags

NGSS.MS-LS2-5

Which is an abiotic factor that would affect the growth of a population within an ecosystem?

• the availability of water
• the availability of producers
• the type of herbivores present
• the number of carnivores present

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1