Photosynthesis

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Across
  1. 4. (input)
  2. 5. (output)
  3. 6. H2O
  4. 10. colorless, odorless gas produced by burning carbon and organic compounds and by respiration
  5. 11. the basic unit of all plants.
  6. 15. the vascular tissue in charge of transport and distribution of the organic nutrients.
  7. 16. a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis
  8. 17. (sugar)
  9. 18. any of the minute pores in the epidermis of the leaf or stem of a plant, forming a slit of variable width which allows movement of gases in and out of the intercellular spaces.
Down
  1. 1. the action of breathing
  2. 2. the only living organisms that produce their own food.
  3. 3. the star around which the earth orbits.
  4. 7. air people breaths
  5. 8. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
  6. 9. the segment of the electromagnetic spectrum that the human eye can view
  7. 12. each of a pair of curved cells that surround a stoma, becoming larger or smaller according to the pressure within the cells.
  8. 13. (in green plant cells)
  9. 14. the vascular tissue in plants that conducts water and dissolved nutrients upward from the root and also helps to form the woody element in the stem.