Plants and

photosynthesis

All organisms on Earth need energy to live and grow.

The primary source of all

energy that Earth’s organisms

need is the

Sun.

But animals can’t eat sunlight.

But animals can’t eat sunlight.

Animals get energy by consuming (eating) other organisms (plants or animals).

Animals are consumers.

Animals are consumers.

Animals are consumers.

Animals must eat (consume) to get the energy they need.

But there is one type of organism that can produce food from sunlight energy.

PlantsPlants are producers.

Produce means “to make.”

Producers make food from sunlight energy.

But there is one type of organism that can produce food from sunlight energy.

PlantsPlants are producers.

Produce means “to make.”

Producers make food from sunlight energy.

But there is one type of organism that can produce food from sunlight energy.

PlantsPlants are producers.

Produce means “to make.”

Producers make food from sunlight energy.

Plants are producers.

But there is one type of organism that can produce food from sunlight energy.

PlantsPlants are producers.

Produce means “to make.”

Producers make food from sunlight energy.

Plants are producers.Produce means “to make.”

Producers make food from

sunlight energy.

Plants are producers. They make food.Only plants can make food.

Plants make food in their

leaves.

A green material in leaves called

chlorophyll (klor oh fil)

turns light energy from the sun into chemical energy (sugar).

Plants must have three things in order to make food.

lightlightwater

CO2 (Carbon dioxide)

Plants must have three things in order to make food.

lightlight

Plants must have three things in order to make food.

lightlightwater

Plants must have three things in order to make food.

lightlightwateralso calledH2O

Plants must have three things in order to make food.

lightlightwateralso calledH2O

Carbon dioxide

Plants must have three things in order to make food.

lightlightwateralso calledH2O

Carbon dioxide CO2

Plants get the light they need from the Sun.

sun

Plants get the CO2, carbon dioxide, they need from the air.

CO2 (carbon dioxide)is a gas that makes up about 1% of Earth’s atmosphere.

Plants get the water they need from their roots.

The process of plants turning sunlight energy, CO2, and water into chemical energy (food, sugar) is called

The process of plants turning sunlight energy, CO2, and water into chemical energy (food, sugar) is called

photosynthesis

The process of plants turning sunlight energy, CO2, and water into chemical energy (food, sugar) is called

photosynthesis(foh toh sin theh sis)

photosynthesis Photo means “light”

photosynthesis Photo means “light”

synthesis mean “to put together”

photosynthesis

Photosynthesis mean “to put together with light.”

Photo means “light” synthesis mean “to put together”

photosynthesis

Photosynthesis mean “to put together with light.”

Photo means “light” synthesis mean “to put together”

Plants “put food together” using light energy in the process called photosynthesis.

Plants take in carbon dioxide (CO2) and use it during photosynthesis.

Plants release (throw away)

oxygen as a waste product as they make

food.

Plants release (throw away)

oxygen as a waste product as they make

food. Oxygen is a gas that makes up 21% of the air.

Plants can’t live without CO2 and must release oxygen.

Animals can’t live without oxygen and must release CO2.

This is a very important

balance for life on Earth.

Review:

Review:

What waste gas is released by plants as they make food?

Review:

What waste gas is released by plants as they make food?

Oxygen

Review:

What gas is needed by plants as they make food?

Review:

What gas is needed by plants as they make food?

Carbon dioxide; CO2

Review:

What waste gas is released by animals as they live and breathe?

Review:

What waste gas is released by animals as they live and breathe?

Carbon dioxide; CO2

Review:

What is the process in which plants make food from sunlight?

Review:

What is the process in which plants make food from sunlight?

Photosynthesis

Review:

In what part of the plant is food (chemical energy; sugar) made during photosynthesis?

Review:

In what part of the plant is food (chemical energy; sugar) made during photosynthesis?

The leaves

Review:

What is the name for the chemical energy that plants need to live and grow?

Review:

What is the name for the chemical energy that plants need to live and grow?

Sugar

Review:

What is the name of the green substance in plants that uses sunlight energy to make sugar in the leaves of plants?

Review:

What is the name of the green substance in plants that uses sunlight energy to make sugar in the leaves of plants?

Chlorophyll

Review:

What is the name for the chemical energy that plants need to live and grow?

Review:

What is the name for the chemical energy that plants need to live and grow?

Sugar

Review:

What is the name for the

chemical energy that animals need to live and grow?

Review:

What is the name for the

chemical energy that animals need to live and grow?

Sugar

What three things do plants need in order to make food in photosynthesis?

What three things do plants need in order to make food in photosynthesis?

Sunlight

What three things do plants need in order to make food in photosynthesis?

Sunlight

Water

What three things do plants need in order to make food in photosynthesis?

Sunlight

Water H2O

What three things do plants need in order to make food in photosynthesis?

Sunlight

Water H2O

Carbon dioxide

What three things do plants need in order to make food in photosynthesis?

Sunlight

Water H2O

Carbon dioxide CO2

Review:

What is another way to say carbon dioxide?

Review:

What is another way to say carbon dioxide?

CO2

Review:

What is another way to say water?

Review:

What is another way to say water?

H2O

Photosynthesis

sunlight

CO2

H2O

Carbon dioxide

water

Photosynthesis

sunlight

CO2

H2O

Carbon dioxide

water

oxygen

Photosynthesis

sunlight

CO2

H2O

Carbon dioxide

water

oxygen

sugar