Ecosystem and Energy Flow

In an energy pyramid, which way does energy flow?

• from the top of the pyramid to the bottom

• from the bottom of the pyramid to the top

• none of these

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which is an example of an autotroph?

• snail

• sunflower

• mouse

• flea

Tags

NGSS.MS-LS2-3

What of the following is an example of a biotic factor?

• Sunlight

• Stream

• Tree

• Rock

Tags

NGSS.MS-LS1-4

NGSS.MS-LS2-4

In what way are photosynthesis and cellular respiration different?

• Cellular respiration stores energy, while photosynthesis releases energy

• Cellular respiration produces oxygen, while photosynthesis uses oxygen

• Photosynthesis releases energy, while cellular respiration stores energy

• Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide

Tags

NGSS.MS-LS1-6

What happens to the amount of carbon in an ecosystem as it moves through an ecosystem?

• Amount of Carbon increases

• Amount of Carbon decreases

• Amount of Carbon stays the same

• New Carbon is created when old carbon decomposes

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which process do primary producers use to convert sunlight into energy-rich compounds?

• Respiration

• Digestion

• Photosynthesis

• Fermentation

Tags

NGSS.MS-LS1-6

What percentage of energy is typically passed to the next trophic level in a pyramid of energy?

• 50%

• 25%

• 10%

• 5%

Tags

NGSS.MS-LS2-3

What is a food chain?

• A complex network of interactions

• A linear sequence of energy transfer

• A pyramid of energy

• A type of autotroph

Tags

NGSS.MS-LS2-3

What is a heterotroph?

• An organism that produces its own food

• An organism that consumes other organisms for energy and nutrients

• An organism that feeds on sunlight

• An organism that breaks down detritus

Tags

NGSS.MS-LS2-3

What is the function of detritivores?

• Consume plants

• Break down detritus into smaller pieces

• Eat both plants and animals

• Produce their own food

Tags

NGSS.MS-LS2-3