Transport in Plants

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  • Created by: chrcur
  • Created on: 04-04-16 11:57

1. What is the symplast pathway?

  • Movement of water through the vacuole.
  • Movement of water through the cytoplasm through the plasma membrane. The cytoplasm of cells is connected through plasmodesmata.
  • Movement of water through cell walls, allowing mineral ions and salts to be carried with the water.
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2. What apparatus can be used for estimating transpiration rate?

  • Oxygen Meter
  • Potometer
  • Water Potential Reader
  • Transpirometer

3. What is the cohesion-tension theory?

  • The combined action of cohesion and tension to move water up a plant.
  • The action of cohesion in a plant causing tension in the leaves.
  • The action of tension to stick molecules together.

4. What is the SINK in transportation of solutes?

  • The removal of ions from a plant.
  • The site where assimilates (solutes) are used up. e.g. roots
  • The uptake of ions in the roots.
  • The site of production of assimilates (solutes). e.g. leaves

5. What are sieve tube elements?

  • Living cells found in phloem that form the tube for transporting solutes. They have no nucleus and few organelles. They are supported by companion cells which carry out the living functions for sieve cells.
  • Living cells that 'sieve' out what solutes are allowed through and those that aren't
  • Dead cells that 'sieve' out what solutes are allowed through and those that aren't

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