1) catalyst: A substance that speeds up or helps chemical reactions.
2) chlorophyll: is the green pigment found in most plants.
3) chloroplast: a special cell body containing chlorophyll.
4) epidermis: the outer layer of cells on the leaf.
5) glucose: the simple sugar formed during photosynthesis.
6) guard cell: a special cell that regulates the stomata.
7) photosynthesis: the process of plants converting carbon dioxide and water into glucose and oxygen.
8) starch: a chain of simple sugar units.
9) stoma: small pore in a leaf (plural: stomata).
10) transpiration: The loss of water through stomata.