2. green plants change light energy from the sun into chemical energy.  Photosynthesis – The process by which green plants change light energy from the sun into chemical energy.  Chloroplast – plant cell organelle where photosynthesis takes place  Chlorophyll – green pigment in chloroplasts that absorbs light.

4. Glucose – used for energy by the plant and herbivores. Oxygen – used for respiration by living things.

5.  1. Stomata – pores in leaf that let CO 2 in and O 2 out.  2. Guard Cells – open and close the pores (stoma)

11.  1. Water – too dry, no photo  desert plants have thick waxy coating to keep water in  2. Temperature – most photo enzymes work best between 0 and 35˚C.  3. Light – more light, more photo up to a point