1. CB2 Topic 6a Plant structure and function
Label the diagram with the following words:
Cytoplasm
Cell wall
Cuticle
Palisade cells
Lower epidermis
Air space
Upper epidermis
What are the reactants on photosynthesis?
Explain why the products of photosynthesis have more energy than the reactants?
Which product of photosynthesis is needed to make starch?
At what time of day would the amount of starch be at its highest? Explain your reasoning.
Explain how stomata open when it is light and close when it is dark.

2. CB2 Topic 6a Plant structure and function
What are the reactants on photosynthesis?
Carbon dioxide and Water
Explain why the products of photosynthesis have more energy than the reactants?
Energy has entered from the surroundings/Photosynthesis is an endothermic process
3 ) Which product of photosynthesis is needed to make starch?
Glucose
4 ) At what time of day would the amount of starch be at its highest? Explain your reasoning.
Towards the evening, because the plant will have been making starch all day and only gets broken down into sucrose when photosynthesis stops
Explain how stomata open when it is light and close when it is dark. When it is light water enters the guard cells making them expand and so opening the gap between them. The opposite happens when it is dark