Photosynthesis

2. The green pigment in plants, algae, and cyanobacteria that is essential for photosynthesis
4. A eukaryotic cell enclosed by a cell wall, containing a membrane-bound nucleus and other cell organelles
5. Substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid, and solid states.
6. a colourless, odourless, tasteless gas essential to living organisms
7. A plant having main pigment chlorophyll in it with which it is capable to perform the main function photosynthesis to prepare its own food
10. The Law of Conservation of Mass means that in an isolated system matter cannot be ___________.
12. A simple sugar which is an important energy source in living organisms
13. A metabolic process wherein, the living cells of an organism obtains energy by taking in oxygen and liberating carbon dioxide
16. A vascular tissue that transports water throughout a plant's body
18. Specialized plant cells in the epidermis of leaves, stems and other organs that are used to control gas exchange
19. The microscopic openings or pores in the epidermis of leaves and young stems
20. The segment of the electromagnetic spectrum that the human eye can view

1. The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
3. A colorless and non-flammable gas made up of one carbon atom and two oxygen atoms
8. The vascular tissue in charge of transport and distribution of the organic nutrients
9. Plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process
11. A substance that is formed as the result of a chemical reaction.
14. What leaf structure transports food from the leaves to the rest of the plant?
15. A substance that takes part in and undergoes change during a reaction.
17. The major source of energy for organisms and the ecosystems of which they are a part.