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NEET 2006
Exam
NEET
Year
2006
Subject
Botany
Chapter
Transport in Plants

NEET 2006 · Botany · Transport in Plants

The translocation of organic solutes in sieve tube members is...

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

Options

  1. Acytoplasmic streaming
  2. Broot pressure and transpiration pull
  3. CP-proteins
  4. Dmass flow involving a carrier and ATP

Correct answer

D. mass flow involving a carrier and ATP

Step-by-step solution

According to mass flow hypothesis the transport of organic solutes takes place from source to sink this transport also depends on metabolic energy. According to cytoplasmic streaming hypothesis, the transport of organic solutes takes place by combination of diffusion and cytoplasmic streaming. Cytoplasmic streaming carry organic solutes from one end the other end of sieve tube. Protcins has a role as defence against phloem feeding insects and sealing of damaged sieve tubes. Protein is absent in monocots and gymnosperms.
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