Photosynthesis

1. Photosynthesis = process : carbohydrate is synthesised by using sunlight, CO2 and H2O. 
2. Photosynthesis occurs in the thylakoid membrane of the chloroplast (contains many pigments : chlorophyll a, chlorophyll b and carotenoids.
3. These pigments are grouped together = photosystems.
4. Two types of photosystems : photosystem I and photosystem II.
5. Both photosystems absorb light energy--> convert it into biochemical energy.