Photosynthesis

• Biologie
• Middelbare school
• mavo, havo
• Leerjaar 2

Welcome!

Today:

Discussing homework 

Explanation photosynthesis  (page 39)

Making homework

What do we eat? And where does that food come from?

What are we going to learn today?

Today we're going to learn: 

What photosynthesis is. 

Why photosynthesis is so important.

What respiration is. 

How photosynthesis and respiration connect to each other.

How do plants make food?

Plants can convert the energy of the sun into energy they can use on their own: nutrition in the form of glucose.

Glucose is a sugar which has a lot of energy stored in it. 

This process is called photosynthesis. 

Photosynthesis takes place in the chloroplasts. 

How does photosynthesis take place?

A plant can't do photosynthesis on it's own. It needs certain substances to let it take place. It need water which it gets out of the ground through the roots. It also needs carbondioxide, which is a gas. It absorbs the carbondioxide through the leaves. Of course it also needs sunlight. 

What does a plant make with photosynthesis

When a plant has all those substances it can perform photosynthesis. During that, a plant makes glucose and oxygen. It stores glucose in differents parts of the plant, and it releases oxygen through the leaves. 

Stomata

Amazone: The lungs of the earth

Homework for next week

The exercises of paragraph 1.5 are homework for next week, you can find them on page 41. You can skip the summary exercise, but you do have to make the plus exercise. 

What is not released during photosynthesis?

1. Oxygen
2. Glucose
3. Carbondioxide

A plant needs oxygen for photosynthesis.

1. True
2. False

Name 2 reasons why it is so importantl there are enough trees on the earth?

Where does photosynthesis take place?