Explain why photosynthesis does not happen at night.
Important Questions on Obtaining Food
Khadija is investigating photosynthesis in pondweed.
Bubbles of gas are produced.
What gas is produced?
Khadija is investigating photosynthesis in pondweed.
Bubbles of gas are produced.
How could Khadija test for the gas?
The diagram below shows a section through a leaf
Use the diagram to help you answer the questions.
Through which part does water escape?
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.
