Plants Photosynthesis and inheritance

Topic Target:

Lesson 1 How do plants Grow?Lesson aimsTo study the process of photosynthesis by which plants make their own food,To interpret data linked to the process and learn to explain the term biomass.

Learning outcomes

By the end of the lesson you should

• be able to explain the terms photosynthesis and biomass

• know that as an organism grows it increases biomass - growth requires food

• understand the process of photosynthesis - raw materials, role of light and chlorophyll and the word equation

On your mini whiteboards

• Write down the things you think plants need to grow

Look at the plants Questions

• What do plants need to grow? • Where does their food come from? • How?• Do plants need soil?

In your books draw a plant and label all the things it needs for

growth

Summarise how plants grow and define the terms: photosynthesis - biomass -

Photosynthesis and Photosynthesis and biomassbiomass

definitions:

Photosynthesis is the process a plant uses to make food and grow.

Biomass is the mass of materials that a plant or animal is made of.

Photosynthesis research

• You need to find / confirm the following information through research and record references.

(You should give book title, author, and page.)

• Raw materials required for photosynthesis (2) • How these raw materials are taken in by the plant • Why light is important • How light is absorbed • Food made • Word equation (Extension symbol equation )• How food is stored in plant

The word and chemical equations for photosynthesis:

Carbon dioxide + water glucose + oxygen

6CO2 + 6H20 C6H12O6 + 6O2

Sunlight

Chlorophyll

Sunlight

Chlorophyll

Four factors affect Four factors affect photosynthesis:photosynthesis:

1. Light – if there is more light photosynthesis happens faster

2. Water – if there is not enough water photosynthesis slows down

3. Temperature – the best temperature is about 300C – anything above 400C will slow photosynthesis right down

4. CO2 – if there is more carbon dioxide photosynthesis will happen quicker

• Watch the animation and answer the question:

• Why is deforestation of the Rain Forests a problem?

• Suggested homework

HOMEWORK:Use a dictionary to find out :

What does the word photo mean?What does synthesis mean?

What do you think photosynthesis means ?Explain

•

Learning outcomes

Can you

• explain the terms photosynthesis and biomass

• explain that as an organism grows it increases biomass - growth requires food

• understand the process of photosynthesis - raw materials, role of light and chlorophyll and the word equation