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5 Written questions

5 Matching questions

  1. Zone of elongation
  2. types of seed dispersal
  3. Phytoremediation
  4. Growth inhibiting hormone
  5. xylem
  1. a root cells elongate, sometimes to more than ten times their original length; it is cell elongation that pushes the root tip farther into the soil; the cells lengthen, rather than expand equally in all directions, because of the circular arrangement of cellulose fibers in parallel bands in their cell walls. The cells elongate by taking up water and the cellulose fibers separate
  2. b The nonliving portion of a plants vascular system that provides support and conveys xylem sap from the roots to the rest of the plant. Xylem is made up of vessel elements and/or tracheids, water-conducting cells. Primary xylem is derived from the procambium. Secondary xylem is derived from the vascular cambium in plants exhibiting secondary growth. DEAD CELLS MOVES WATER AND MINERALS UP FROM THE ROOTS.
  3. c abscisic acid
  4. d one type of bioremediation, the use of living organisms to detoxify polluted sites
  5. e fruit, wind, animals

5 Multiple choice questions

  1. A waxy barrier in the walls of endodermal cells in a plant root that prevents water and ions from entering the xylem without crossing one or more cell membranes
  2. - rock particles of various sizes, living organisms, and humus. It is home to an astonishing number and variety of bacteria, algae, and other protists, fungi, and small animals such as earthworms, roundworms, and burrowing insects.
  3. An outgrowth of an epidermal cell on a root, which increases the root's absorptive surface area.
  4. A sac in which pollen grains develop, located at the tip of a flower's stamen
  5. - osmotic pressure caused by the buildup of solutes in the xylem of roots; root xylem up solutes, down water, therefore water in soil diffuses into root; pressure in root xylem forces water up through stem xylem

5 True/False questions

  1. sepalsA plant that completes its life cycle in a single year or growing season.


  2. petalsA modified leaf of a flowering plant. Petals are the often colorful parts of a flower that advertise it to pollinators.


  3. Guard cellsThe female part of a flower, consisting of a stalk with an ovary at the base and a stigma, which traps pollen, at the tip.


  4. heartwoodA sac in which pollen grains develop, located at the tip of a flower's stamen


  5. Structure producing pollen grainsanthers


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