Ecology LEAP Review

Which statement describes the amount of energy passed to the hawk in the energy pyramid above?

• The hawk has 50% of the energy passed too it

• The hawk has the least amount of energy available to it.

• The hawk has the most amount of energy available too it.

• The hawk has no energy available to it.

Tags

NGSS.MS-LS2-3

The amount of energy that usually transfers from one trophic level to the next...

• 10%
• 20%
• 80%
• 50%

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Listed in the Item Bank are some important labels for sections of the image below. Drag and drop each label to the corresponding area it identifies in the image

c

d

e

f

b

a

Producer

Consumer

100%

1%

0.1%

10%

Tags

NGSS.MS-LS2-3

Label the Energy Pyramid

a

b

c

d

460 J

4,600 J

46,000 J

460,000 J

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Which change would lead to higher carbon dioxide levels in the atmosphere?

• an increase in photosynthesis

• a decrease in animal respiration

• an increase in the burning of fossil fuels

• a decrease in the destruction of forests

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Joshua is drawing a diagram of Earth’s nitrogen cycle. What should he write as the role of nitrogen-fixing bacteria?

• absorb excess nitrogen compounds

• change nitrogen gas into compounds plants can use

• release nitrogen gas into air

• transport nitrogen gas into the dirt

Nitrogen fixation is performed by...

• all plants and animals

• plants only

• animals only

• bacteria near the roots of plants

Tags

NGSS.MS-LS2-3

​Which statement best explains why decomposers are an important part of a food web?

• They use sunlight to make their own food

• They give off oxygen for animals to breathe

• They provide camouflage for small animals

• They make nutrients available to plants

Tags

NGSS.MS-LS2-3

In which direction should an arrow be drawn to represent energy flow between these two organisms?

• To the Left
• To the Right

Tags

NGSS.MS-LS2-3

A species that may not have a high population in an ecosystem, but it does have a major influence on the populations living in the same ecosystem.

• Indicator species

• Dominant species

• Keystone species

• Invasive species