The hypothesis put forth by Fensom and Willia | vedclass

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Question

(A) Fensom and Williams $(1974)$ proposed the contractile protein hypothesis for phloem transport.They observed a network of interlinked microfibrils

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Contractile protein

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(A) Fensom and Williams $(1974)$ proposed the contractile protein hypothesis for phloem transport.They observed a network of interlinked microfibrils in the sieve tube elements.These microfibrils were composed of contractile threads of $P$-protein,which are believed to facilitate the movement of sap through the sieve tubes via rhythmic contractions.

The hypothesis put forth by Fensom and Williams is:

Similar Questions

Which of the following mechanisms can explain the transport of sucrose from source to sink?

During translocation,the carbohydrates are relatively richer in:

When a plant is girdled,what happens?

The direction of translocation of organic food or solutes is:

$A$ : The translocation in phloem is bidirectional.
$R$ : The source and sink relationship is variable.

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