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The translocation of organic solutes in sieve tube members is supported by:

  1. A
    root pressure and transpiration pull
  2. B
    P-proteins
  3. C
    mass flow involving a carrier and ATP
  4. D
    cytoplasmic streaming

Solution & Step-by-step Explanation

According to Munch's mass flow hypothesis, organic solutes are actively loaded (involving ATP) into the sieve tubes, generating a high osmotic pressure that drives mass flow down a pressure gradient.

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The translocation of organic solutes in sieve tube members is supported by:
A
root pressure and transpiration pull
B
P-proteins
C
mass flow involving a carrier and ATP
D
cytoplasmic streaming

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Transport in Plants

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