Across
- 7. a plastid that contains chlorophyll and in which photosynthesis takes place.
- 8. each of a pair of curved cells that surround a stoma becoming larger or smaller according to the pressure within the cells
- 10. tiny openings present on the epidermis of leaves
- 11. a substance that takes part in and undergoes change during a reaction.
- 12. the action of breathing
- 15. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
- 16. the vascular tissue in plants that conducts water and dissolved nutrients upward from the root
Down
- 1. plant that is green
- 2. a simple sugar which is an important energy source in living organisms
- 3. an article or substance that is manufactured or refined for sale
- 4. the segment of the electromagnetic spectrum that the human eye can view
- 5. the vascular tissue in plants that conducts sugars and other metabolic products downward from the leaves
- 6. an inorganic compound with the chemical formula H 2O
- 7. important heat-trapping gas also known as a greenhouse gas
- 9. fat-soluble pigment found naturally in plants
- 10. a big ball of gas in our solar system
- 13. eukaryotic cells that vary in several fundamental factors from other eukaryotic organisms
- 14. colorless, odorless, tasteless gas