Structural Organization of Plants.

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Across
  1. 2. A protective layer that covers the surface of the plant's epidermis.
  2. 3. A microscopic openings responsible for gas and water exchange in plants.
  3. 4. Forms every organ.
  4. 6. Maintain a relatively constant body temperature, even as the external temperature varies.
  5. 8. Often consist of a petiole and a blade.
  6. 11. The layer below the epidermis.
  7. 14. Anchor the plant, transport water, minerals, and sugars, and store excess nutrients.
  8. 17. Plant defenses that are always “on” are called ______ defenses.
  9. 19. A plant tissue that transports water and nutrients all throughout the plant's body.
  10. 20. Can switch between homoeothermic and poikilothermic strategies.
Down
  1. 1. A portion of the shoot system consists of flowers and fruits.
  2. 5. An organ of the shoot system that function as support, conduction, storage, and necessary for photosynthesis.
  3. 7. Smallest unit of a living thing.
  4. 9. A part of the shoot system that is not reproductive.
  5. 10. Allows the body temperature to fluctuate with the environment.
  6. 12. Obtain heat from metabolic activity within their own cells.
  7. 13. Obtain heat from external sources.
  8. 15. The plants’ resources until they are critically needed.
  9. 16. A plant tissue that transports organic materials to all parts of the plant.
  10. 18. Small hairs on the leaf surface that are present in some plants.