SB5

Which of the following statements on ecosystem stability is correct?

• Higher biodiversity in an ecosystem provides better stability.

• Multiple keystone species are important to ecological stability.

• Ocean ecosystems are far more stable than terrestrial ecosystems.

• Higher animal to plant ratios provides the most stable environment.

Tags

NGSS.MS-LS2-5

What is a group of individual organisms that belong to the same species?

• Community

• Ecosystem

• Biome

• Population

If two species of organisms occupy the same niche ____________

• one will find a new habitat.

• competition will be very intense.

• both organisms will become extinct.

• both will need to enlarge their habitat.

Tags

NGSS.MS-LS2-4

What impact do the amounts of available energy, water, and oxygen have on an

ecosystem?

• They are used as nutrients by living organisms.

• They recycle the residue of dead organisms.

• They control the environment's energy source.

• They act as limiting factors on the organisms.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What do tropisms NOT allow a plant to do?

• respond to light

• respond to gravity

• respond to water sources

• respond to sound

Look at the image

• gravitropism

• phototropism

• thigmotropism

• rapid response

Tags

NGSS.MS-LS1-5

Alligators will use their powerful feet, tail, and snouts to dig a hole through the mud, producing small ponds known as "alligator holes." Many other species benefit from alligator holes. During the dry season, fish, turtles, and other aquatic animals live in the alligator holes. Birds, terrestrial animals, and plants use these holes as a source of water. What term best describes the role of alligators in this ecosystem?

• invasive exotic species

• keystone species

• producer

• primary consumer

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which is NOT an abiotic limiting factor?

• too much water

• too high temperature

• insufficient nutrients

• population overcrowding

Tags

NGSS.MS-LS1-5

SB5

• A) Photosynthesis is a process that converts light energy into chemical energy.

• B) Photosynthesis occurs only in animals.

• C) Photosynthesis is a process that converts chemical energy into light energy.

• D) Photosynthesis occurs only in fungi.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

SB5

• A) Mitochondria are responsible for photosynthesis.

• B) Chloroplasts are responsible for photosynthesis.

• C) Ribosomes are responsible for photosynthesis.

• D) Nucleus is responsible for photosynthesis.

Tags

NGSS.MS-LS1-6