NEET Biology question

Not in NEET syllabus

Which of the following statements about the mass flow hypothesis is wrong?

(A)It is the accepted mechanism for translocation of sugars from source to sink
(B)As glucose is prepared at the source, it is converted to sucrose
(C)Sucrose is actively loaded into a sieve tube
(D)The process of loading at the source produces a hypotonic condition in the phloemCorrect

Answer: (D)

Solution

Statements (a), (b) and (c) correctly describe the mass flow hypothesis: it is the accepted mechanism for sugar translocation; glucose produced at the source is converted to sucrose before transport; and sucrose is actively loaded into the sieve tube.

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Question ID VK-127999