Photosynthesis

4. a pigment present in all green plants and a few other organisms
6. A type of sugar; the chief source of energy for living organisms
8. is a plant that cycles carbon dioxide into four-carbon sugar compounds to enter into the Calvin cycle
13. is a clear gas composed of one atom of carbon (C) and two atoms of oxygen (O)
14. a type of plant that produces a three-carbon compound (3-phosphoglyceric acid) through the Calvin-Benson cycle\
15. the electromagnetic radiation of the sun that reaches the earth, particularly infrared, visible light, and ultraviolet ligh
16. a chemical element with an atomic number of 8
17. is a photosynthetic adaptation to periodic water supply
18. pouch-like sacs that are bound to a membrane in the chloroplasts of a plant cell

1. measured in a billionth
2. the source of energy for use and storage at the cellular level
3. the organelles responsible for photosynthesis
5. certain photochemical reactions involved in photosynthesis, the main process by which plants acquire energy.
6. little discs of membrane on which the light-dependent reactions of photosynthesis take place
7. a substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid, and solid states
8. divided into three main stages: carbon fixation, reduction, and regeneration of the starting molecule
9. organism that goes through photosynthesis
10. The cells and tissues that support and give structure to organs, glands, or other tissues in the body
11. Colors of light that human eyes can see
12. any coloured material found in a plant or animal cell
15. tiny openings present on the epidermis of leaves