Science Unit 3 Lesson 1 & 2 Review

Plants make food using energy from the _.

Which two types of matter do plants need to combine to make their food?

• sugar and water

• water and air

• air and sugar

• soil and sugar

Imagine two plants get the same amount of sunlight, air, and nutrients. What could cause one of the plants to look droopy or wilted?

Choose all that apply.

• It is the effect of getting too much sun.

• It is the effect of not getting enough air.

• It is the effect of getting too much water.

• It is the effect of not getting enough water.

This is the energy source used to change matter that isn't food into matter that is food.

These structures help a plant absorb nutrients and water.

Air, water, and waste pass through these structures of a plant.

Which of the following are needed by a plant to make food?

• air, sunlight, water

• air, sugar, sunlight

• sugar, sunlight, waste

• waste, water, air

Which is not a necessary part of a system for growing plants?

• air

• water

• nutrients

• sunlight

• soil

Which part of a plant would most likely be larger in a dry environment?

Suppose a plant gets only 2 hours of sunlight every 24 hours. Which is the most likely to be true?

• The plant will grow wider instead of taller.

• The plant will grow larger roots to extract more nutrients from the soil.

• The plant will make less food and grow more slowly than one exposed to more light.

• The plant will drop all leaves except the top layer of leaves.