Introduction to Plants Guided Reading and Study

Name______Date______Class______

Introduction to Plants ■ Guided Reading and Study

Photosynthesis and Light

This section explains how plants get energy from sunlight and describes what occurs during photosynthesis.

Use Target Reading Skills

Preview the figure, "The Photosynthesis Process" in the textbook. Then write two questions that you have about the diagram below. As you read, answer your questions.

The Photosynthesis Process

Q. / How issunlight involvedin photosynthesis?
A.
Q.
A.

The Nature of Light

1.Circle the letter of each sentence that is true about light.

a.The sun is the source of energy on Earth.

b.The light you can see is called a prism.

c.White light is made up of red, orange, yellow, green, blue, and
violet light.

d.Shiny surfaces absorb light and dark surfaces reflect light.

2.The colors of light that make up white light are referred to as the

3.A shirt looks red because it______red light.

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Name______Date______Class______

Introduction to Plants ■ Guided Reading and Study

Photosynthesis and Light (continued)

4.Circle the color of light that is reflected by plant leaves.

a.green

b.blue

c.yellow

d.red

5.Light is absorbed by______found in the

chloroplasts of plant cells.

6.Circle the letter of each color of light that is absorbed by chlorophyll.

a.green

b.blue

c.yellow

d.red

7.Circle the letter of each sentence that is true about plant pigments.

a.Accessory pigments absorb the same colors of light that chlorophyll does.

b.Accessory pigments are always visible in plants.

c.Accessory pigments absorb different colors of light than chlorophyll.

d.Most accessory pigments are not visible in plants because they are masked
by chlorophyll.

The Photosynthesis Process

8.How is the light energy absorbed by plants important to photosynthesis?

9.In addition to light, what do plants need for photosynthesis?

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Name______Date______Class______

Introduction to Plants ■ Guided Reading and Study

10. In the diagram below, draw arrows to show which materials the plant istaking up
and which materials the plant is giving off or using.

Oxygen

Sunlight

Carbon dioxide

Water

11.Write the chemical equation for the process of photosynthesis.

12.What happens to excess food made by plants?

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