Exploring Food Webs and Energy Flow

What process do plants use to convert sunlight into chemical energy?

• Photosynthesis

• Fermentation

• Osmosis

• Cellular respiration

Tags

NGSS.MS-LS1-6

Which organism is at the top of the food chain and does not get eaten when alive?

• Hawk

• Rabbit

• Snake

• Grass

Tags

NGSS.MS-LS2-3

What role do decomposers play in an ecosystem?

• They break down dead material.

• They consume live plants.

• They capture sunlight.

• They produce oxygen.

Tags

NGSS.MS-LS2-3

What percentage of energy is typically transferred from one trophic level to the next in a food web?

• About 75%

• About 50%

• About 25%

• About 10%

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which ecosystem is characterized by having cacti and shrubs as primary producers?

• Rainforest

• Desert

• Ocean

• Tundra

What is a primary consumer in a rainforest ecosystem likely to be?

• Eagle

• Sloth

• Jaguar

• Algae

Tags

NGSS.MS-LS2-3

What substance do marine biologists study the accumulation of in apex predators?

• Phosphorus

• Mercury

• Calcium

• Nitrogen

Tags

NGSS.MS-LS2-4

What does a dietitian typically help with?

• Mechanical repairs

• Computer programming

• Meal planning

• Weather forecasting

What gas is produced by yeast during the sugar breakdown process?

• Hydrogen

• Carbon dioxide

• Nitrogen

• Oxygen

What is the role of yeast in the ecosystem as demonstrated in the experiment?

• Pollination

• Predation

• Decomposition

• Photosynthesis

Tags

NGSS.MS-LS2-3