The diagram below shows a section through a leaf

Use the diagram to help you answer the questions.

In which part of the leaf most photosynthesis takes place?

The diagram below shows a section through a leaf

Use the diagram to help you answer the questions.

Which part of the leaf has air spaces so that gases can move around?

Some trees have small needles instead of leaves. The needles have fewer stomata and a thick waxy cuticle. 

Explain one way this helps the tree survive.

Fewer stomata and a thick waxy cuticle help the tree lose less _______

This is important for survival because water is needed for ________

Surika has a variegated leaf from a plant that has been in a sunny place two days. A variegated leaf has both green and white parts.

She boils the leaf in water.

Then she then puts it in hot ethanol.

Finally, she tests it with iodine solution.

Complete the table to show what results you would expect and why.

Name the main food group we get from:

Fish

Name the main food group we get from:

Rice