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5 Written Questions

5 Matching Questions

  1. xylem
  2. winter solstice
  3. photoperiodism
  4. auxin
  5. annual rings
  1. a December 22, when the sun is at its southernmost point
  2. b consist of less densely packed, light-colored spring wood, alternating with densely packed, dark-colored summer wood (made of xylem- phloem always made new annually)
  3. c a plant's response to seasonal changes in length of night and day
  4. d plant hormone that diffuses down from the shoot tip meristem to stimulate cell growth and elongation
  5. e the woody part of plants: the supporting and water/nutrient-conducting tissue, consisting primarily of tracheids and vessels. dead cells at maturity, fused end to end with perforations between

5 Multiple Choice Questions

  1. characterized by dark color due to densely packed xylem produced in the summertime
  2. any of a class of plant hormones that promote cell division and delay the senescence of leaves; affects growth of root system
  3. characterized by a light color due to rapid production of xylem in the springtime
  4. Specialized cells to conduct water, key cells in xylem with vessel elements.
  5. a unit strand of the vascular system in stems and leaves of higher plants consisting essentially of xylem and phloem; eventually separate as larger plants age and fuse as rings

5 True/False Questions

  1. lateral meristema meristem that thickens the roots and shoots of woody plants, contributing to secondary growth i.e. vascular cambium and cork cambium


  2. thigmotropismgrowth influence in plants by touch, i.e. vines curling around tree trunks


  3. day-neutral plantplant that generally requires short nights-- less that 10-12 hours of darkness to begin the flowering process (spring, approaching summer)


  4. sclerenchymaplant cells with very thick primary and secondary cell walls fortified with lignin


  5. gibberellinrefers to the bonding of water to xylem walls (xylem=polysaccharide of glucose)


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