Life Science Review

What is the main purpose of photosynthesis?

• To produce oxygen for animals

• To convert water into nutrients

• To convert sunlight into chemical energy

• To absorb carbon dioxide from the atmosphere

Tags

NGSS.MS-LS1-6

In which part of the plant does photosynthesis primarily occur?

• Roots

• Stems

• Leaves

• Flowers

Tags

NGSS.MS-LS1-6

What are the primary components needed for photosynthesis to occur?

• Water and soil

• Sunlight and oxygen

• Carbon dioxide and water

• Nitrogen and phosphorus

Tags

NGSS.MS-LS1-6

What is an ecosystem?

• A single species and its environment

• A community of organisms and their physical environment

• A collection of plants only

• A system of non-living things only

Tags

NGSS.MS-LS2-3

Which of the following is an example of a consumer in an ecosystem?

• Algae

• Deer

• Mushrooms

• Grass

Tags

NGSS.MS-LS2-3

What is the primary energy source for ecosystems?

• Water

• Sunlight

• Soil nutrients

• Wind

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following best describes a food chain?

• A process by which energy is recycled in an ecosystem

• A sequence of organisms each dependent on the next as a source of food

• A group of animals that live together

• A system of water cycles in an ecosystem

What happens to energy as it moves up the food chain?

• It increases

• It decreases

• It stays the same

• It disappears

Tags

NGSS.MS-LS2-3

Why are decomposers important to an ecosystem?

• They produce oxygen for animals to breathe.

• They consume living plants for energy.

• They break down dead organisms, returning nutrients to the soil.

• They capture sunlight to produce food.

Tags

NGSS.MS-LS2-3

Which gas is a byproduct of photosynthesis?

• Nitrogen

• Oxygen

• Carbon dioxide

• Hydrogen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3