1. What is the function of the palisade layer
- Transparent to allow sunlight through to other layers.
- Contains lots of air space to allow optimum gas exchange.
- Cells towards the top of the leaf contain chloroplasts which allow maximum absorption of sunlight
- Contain guard cells which regulate the opening and closing of the stomata.
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Other questions in this quiz
2. Describe an experiment to investigate photosynthesis, showing the evolution of oxygen from a water plant and the requirements of light.
- PART 3 - If the splint relights, oxygen is present. This proves that oxygen is produced through photosynthesis.
- ADDITIONAL - If you keep the apparatus in the dark, you may be able to collect a gas, but this gas will not relight a glowing splint because it isn't oxygen.
- PART 1 - You will need a pondweed, beaker, glass tube and a light for this experiment. Firstly, place the pondweed in a flask. Place the light facing the pondweed which will then produce bubbles of oxygen.
- PART 2 - When the tube is full of gas, test for oxygen by putting a glowing splint quickly into the tube.
3. Why does a plant require mineral ions?
- To be healthy and grow properly.
- To stay alive.
- To generate food.
- To drink water.
4. How is a leaf adapted for photosynthesis
- Broad and flat to provide a huge surface area for absorption of light
- Because they are green
- Their shape
5. Why does a plant require nitrates?
- To photosynthesize.
- To form amino acids that form proteins of cells growth.
- To grow.
- To breathe.