17.2 Plant Structures and Responses

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Across
  1. 4. in plants, a lateral meristem that generates layers of cork
  2. 5. a lateral meristem between the xylem and phloem that produces woody growth in some plants
  3. 11. a theory that explains the movement of water through xylem vessels in plants
  4. 13. the process that transports sugars throughout phloem in plants
  5. 14. bumps on the stems of plants that give rise to branches, buds, and leaves
  6. 17. in plants, tissue underneath the epidermis that fills up most of the volume of plants and is dead when mature
  7. 18. vascular vessels that transport sugars and other products from the leaves to other plant parts
  8. 19. long, tightly packed cells in the ground tissue of plants where much of the chlorophyll containing cells are found
  9. 20. the ability of plants to determine direction so that roots grow downward and stems grow upward
  10. 22. a thick layer of ground tissue that surrounds the vascular tissue in a root
  11. 23. mesophyll loosely packed cells in leaves that have few chloroplasts and provide space for the diffusion of water, oxygen, and carbon dioxide
  12. 24. in plants, vascular tissue consisting of hollow pipes that transport water and dissolved minerals up from the roots
  13. 25. the ability of plants to sense day length to activate periods of growth or dormancy
Down
  1. 1. in plants, a mass of stem cells at the tip of roots and stems that is the site of new plant growth
  2. 2. in plants, a waxy covering that waterproofs leaves
  3. 3. movement of plants or growth toward the direction of sunlight
  4. 6. a root that grows from a non-root plant part, such as a stem or leaf
  5. 7. a single thickened root at the center of a root system from which other roots grow
  6. 8. a strong macromolecule in some plant cell walls that make cells woody and rigid
  7. 9. in plants, long, thick phloem cells that lack nuclei and function to carry sugars through the phloem vessels
  8. 10. in plants, short, nucleated cells found in phloem, adjacent to sieve cells
  9. 12. in plants, a meristem that increases the diameter of stems and roots
  10. 15. a strand of xylem and phloem that runs the length of a plant
  11. 16. a tangle of small roots that develop in some plants
  12. 21. hair-like projections from roots that increase the surface area available for water absorption