Matter and Energy in Ecosystems

What is the MAIN source of energy supply for a food chain?

• Sunlight (absorbed by producers)

• Water (from the soil)

• Nutrients (from decomposers)

• Wind (for pollination)

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Why are producers important in an ecosystem?

• They convert solar energy into chemical energy, providing food for other organisms.

• They decompose organic matter, recycling nutrients back into the soil.

• They compete with consumers for resources, limiting their population.

• They regulate the climate by absorbing carbon dioxide from the atmosphere.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

What do arrows in a food web represent?

• Energy

• Water

• Nutrients

• Oxygen

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is a primary consumer?

• An organism that eats producers, such as zooplankton.

• An organism that produces its own food through photosynthesis.

• An organism that decomposes dead matter.

• An organism that feeds on primary consumers.

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NGSS.MS-LS2-2

Which organism receives the least amount of energy from the producers?

• Hawk

• Rabbit

• Deer

• Grasshopper

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NGSS.MS-LS2-3

What is the difference between a herbivore and a carnivore?

• Herbivores eat plants, while carnivores eat other animals.

• Herbivores are larger than carnivores.

• Carnivores eat only fruits and vegetables.

• Herbivores can live in water, while carnivores cannot.

What role do decomposers play in an ecosystem?

• They produce energy through photosynthesis.

• They break down dead organisms and recycle nutrients back into the soil.

• They compete with plants for sunlight and nutrients.

• They are primary consumers that eat plants.

Tags

NGSS.MS-LS2-3

What is a secondary consumer?

• An organism that eats primary consumers, such as a ladybird.

• An organism that produces its own food through photosynthesis.

• An organism that feeds on decomposed matter.

• An organism that is at the top of the food chain.

Tags

NGSS.MS-LS2-3

Who is the producer in an ecosystem?

• Lettuce

• Rabbit

• Deer

• Frog

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NGSS.MS-LS2-3

What is photosynthesis?

• The process by which green plants use sunlight to synthesize foods from carbon dioxide and water.

• A method of respiration in animals that involves oxygen.

• The way plants absorb nutrients from the soil.

• A chemical reaction that occurs only in the dark.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3