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5 Written questions

5 Matching questions

  1. phytochrome
  2. "source to sink"
  3. vascular bundle
  4. root pressure
  5. pressure-flow theory
  1. a Light receptor pigment in photoperiodism. Pr (red-light absorbing) vs Pfr (infrared light absorbing) In short-day plants, it stops flowering but in long-day plants it induces flowering
  2. b explanation of plant nutrient transport from leaves/photosynthetic materials to other parts of the plant driven by the pressure build-up of hypertonic solution in leaf phloem
  3. c the flow of water into roots at roots hairs that builds up pressure, causing upward movement at night that is significant in smaller plants (eventually opposed by gravity)
  4. d phloem moves sugars from where they are made to where they are needed. This can be referred to as movement from ______ to _______
  5. e 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 Multiple choice questions

  1. 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
  2. small extensions of the roots which actively transport nutrients, causing water to come in passively. maximize surface area for absorption
  3. Specialized cells to conduct water, key cells in xylem with vessel elements.
  4. December 22, when the sun is at its southernmost point
  5. the process by which evaporation at the leaf surface pulls water up the tree through xylem

5 True/False questions

  1. vascular cambiumproduces outer protective layer of the bark


  2. sieve tubescharacterized by dark color due to densely packed xylem produced in the summertime


  3. hormonerefers to the hydrogen-bonding between water molecules to make a chain of water from leaf to roots


  4. primary growthincrease in plant LENGTH


  5. parenchymatraditional plant cells with primary cell walls that are thin and flexible and that lack secondary cell walls