Friday, March 7, 2014

5th Yr Biology


Test left for class.
Please answer all questions in this test on Transport in Flowering Plants.

  1. Define the term root pressure.
  2. Define the term transpiration.
  3. Describe the uptake of water into the plant.  In your answer, refer to each of the following; root hairs, root cortex, xylem, osmosis, diffusion, root pressure.
  4. Describe the process of water transport through the plant.  In your answer, refer to each of the following; root hairs, root cortex, xylem, osmosis, diffusion, root pressure, transpiration, stomata.
  5. Describe the uptake and process of transport of minerals through the plant.
  6. State two sources of carbon-dioxide to plants.
  7. Name the pores in leaves through which gas exchange occurs.
  8. Name the tissue in which the carbohydrates produced in photosynthesis are transported.
  9. Give one example of a root modified for food storage.
  10. Give one example of a stem modified for food storage.
  11. Give one example of a leaf modified for food storage.
Higher Level:

  1. Who proposed the Cohesion-Tension Model of Xylem transport?
  2. Describe the Cohesion-Tension Model of Xylem transport.  In your answer, include the following; attractive forces of water molecules, cohesive property, role of transpiration.

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