Bio 14 Week 8 Lecture

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Across
  1. 2. Plant growth responses known to delay senescence in leaf tissues, promote mitosis, and stimulate differentiation of the meristem in shoots and roots.
  2. 3. Rigid structure located outside the cell membrane. It consists mainly of cellulose and may contain lignin.
  3. 6. Mostly made up of parenchyma cells, but may also contain collenchyma and sclerenchyma cells that help support the stem.
  4. 7. Flattened structure of higher plant
  5. 9. are points of attachment for leaves, aerial roots, and flowers
  6. 13. The layer of tissue between the vascular tissue and the epidermis
  7. 14. Physiological process that leads to the fall of a plant organ (such as leaf or petal drop)
  8. 16. Are xylem cells with thick secondary cell walls that are lignified.
  9. 20. Directional bending of a plant toward a light source
  10. 21. Are specialized plastids that contain starch granules and settle downward in response to gravity found in shoots and in specialized cells of the root cap.
  11. 22. Contain more ribosomes and mitochondria which are found alongside the sieve-tube cells
  12. 23. The ground tissue towards the interior of the vascular tissue in a stem or root
  13. 24. Volatile plant hormone that is associated with fruit ripening, flower wilting, and leaf fall
  14. 25. Are xylem cells with thinner walls; they are shorter than tracheids.
Down
  1. 1. Occur only at the bases of leaf blades and at nodes of monocots
  2. 4. Contain the green pigment chlorophyll and carry out photosynthesis
  3. 5. part of phloem tissue that are arranged end to end to make up a long sieve tube which transports organic substances such as sugars and amino acids and lacks some organelles.
  4. 8. Main plant hormone responsible for cell elongation in phototropism and geotropism
  5. 10. Type of plant tissue that covers and protects the plant.
  6. 11. Type of plant tissue that transports water, minerals, and sugars to different parts of the plant.
  7. 12. Contains water and dissolved substances. Its primary role is to maintain pressure against the inside of the cell wall, giving the cell shape and helping to support the plant.
  8. 15. The arrangement of leaves on a stem.
  9. 17. cells Are elongated cells with unevenly thickened walls, which provide structural support, mainly to the stem and leaves.
  10. 18. Are extensions of root epidermal cells which increase the surface area of the root thus greatly contributing to the absorption of water and minerals.
  11. 19. Are plant regions of continuous cell division and growth