Which of the following best describes the role of photosynthesis in a food web?

It produces food that supports other organisms.

It breaks down food for energy.

Which statement best explains why photosynthesis is important to animals?

It provides oxygen and food for animals.

It allows animals to breathe underwater.

Why do plants need both photosynthesis and cellular respiration?

To make food and release energy

To produce carbon dioxide and nitrogen

Which of the following best describes the relationship between photosynthesis and cellular respiration?

The products of one are the reactants of the other.

Explain why removing all the plants from an aquarium would affect the fish living in it.

The fish would lose a source of oxygen and food.

The fish would have more space.

The water would become clearer.

A student sets up an experiment with two identical plants. One is placed in sunlight, and the other in darkness. After a week, the plant in darkness is wilted and yellow. What does this suggest about the importance of sunlight for plants?

Sunlight is needed for photosynthesis and healthy growth.

Sunlight is not important for plants.

Plants grow better in darkness.

A food web is disrupted when a disease kills most of the plants. Predict what will happen to the herbivores and carnivores in this web.

Herbivores will decrease, followed by carnivores.

A student claims that animals do not need plants to survive. Use your knowledge of photosynthesis and cellular respiration to evaluate this claim.

The claim is incorrect because animals depend on plants for food and oxygen.

The claim is correct because animals make their own food.

The claim is correct because animals only need water.

The claim is incorrect because animals do not need oxygen.

A group of students wants to test how different colors of light affect the rate of photosynthesis in plants. Which is the best way to design this experiment?

Use identical plants and expose each to a different color of light.

Use the same plant and change the soil each day.

Use different plants and different amounts of water.

Use one plant and change the temperature.

Explain how the processes of photosynthesis and cellular respiration form a cycle in nature.

The products of photosynthesis are used in cellular respiration, and the products of cellular respiration are used in photosynthesis.

Both processes use sunlight to make food.

Both processes produce glucose.

Both processes release energy from food.

A plant is placed in a sealed container with a mouse. Predict what will happen over time and explain why.

The plant will provide oxygen for the mouse, and the mouse will provide carbon dioxide for the plant.

The mouse will eat the plant and survive.

The plant will use up all the oxygen.

A student observes that when yeast is added to sugar water, bubbles form. Which process is most likely responsible for the bubbles, and what gas is being produced?

Cellular respiration, carbon dioxide

A farmer wants to increase the growth of crops in a greenhouse. Which two factors should the farmer focus on to maximize photosynthesis?

Increasing sunlight and carbon dioxide

Increasing temperature and humidity

Photosynthesis test 1A

Authored by Kristion Plummer

Science

7th Grade

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main process by which plants make their own food?

Photosynthesis

Respiration

Digestion

Fermentation

Tags

VA.LS.4.a

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which gas do plants take in during photosynthesis?

Oxygen

Carbon dioxide

Nitrogen

Hydrogen

Tags

VA.LS.4.a

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main product of photosynthesis that provides energy for most food webs?

Oxygen

Glucose

Water

Carbon dioxide

Tags

VA.LS.4.a

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which organelle in plant cells is responsible for photosynthesis?

Mitochondria

Chloroplast

Nucleus

Ribosome

Tags

VA.LS.4.a

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the chemical formula for glucose, the sugar produced in photosynthesis?

Tags

VA.LS.4.a

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which process do both plants and animals use to release energy from food?

Photosynthesis

Cellular respiration

Fermentation

Transpiration

Tags

VA.LS.4.b

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main purpose of cellular respiration?

To produce food

To release energy from food

To absorb sunlight

To make oxygen

Tags

VA.LS.4.b

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Photosynthesis test 1A

What is the main process by which plants make their own food?

Which gas do plants take in during photosynthesis?

What is the main product of photosynthesis that provides energy for most food webs?

Which organelle in plant cells is responsible for photosynthesis?

What is the chemical formula for glucose, the sugar produced in photosynthesis?

Which process do both plants and animals use to release energy from food?

What is the main purpose of cellular respiration?

Which gas is released as a byproduct during photosynthesis?

What are the two main reactants needed for photosynthesis?

Which of the following is a product of cellular respiration?

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