Transport Systems in Plants

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  • Created by: jenny
  • Created on: 23-05-16 22:07

1. What is evidence for translocation?

  • Sieve plates roles are unclear
  • If a metabolic poision is usedtranslocation is stopped
  • Not all solutes in phlowm move at the same rate
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2. What do sieve plates not have?

  • Is between sieveplates
  • Pores to allow entry to ions
  • Dense cytoplasm
  • Many plasmodesmata between compaion cells to allow comunication

3. What is not an adaptation of a sieve tube element?

  • End walls break down to form a continnuous pipe
  • Near a companion cell
  • Contain very little cytoplasm
  • No nucleus, tonoplast or ribosomes
  • Sieve plates at intervals

4. What is the water proof casparian strip made out of?

  • Wax
  • Suberin
  • Lignin

5. What is not a factor that increases transpiration rate?

  • Higher temperature
  • Humidity (Less humid)
  • Number and size or stomata
  • More branching stem
  • Water availability
  • More leaves
  • Wind (Stronger)

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