Photosynthesis

4. It is a polysaccharide which functions as a carbohydrate store and is an important constituent of the human diet.
7. a simple sugar which is an important energy source in living organisms and is a component of many carbohydrates.
9. a colourless, odourless gas produced by burning carbon and organic compounds and by respiration.
10. a plastid in green plant cells which contains chlorophyll and in which photosynthesis takes place.
11. a green pigment, present in all green plants and in cyanobacteria, which is responsible for the absorption of light to provide energy for photosynthesis.

1. the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.
2. the spreading of something more widely.
3. a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
5. the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.
6. a colourless, transparent, odourless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.
8. the strength and vitality required for sustained physical or mental activity.