Which of the following is the main point in d | vedclass

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(C) The Munch theory (Pressure Flow Hypothesis) suggests that translocation is a passive physical process driven by turgor pressure gradients. However

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Explanation of sugar transport is not given

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(C) The Munch theory (Pressure Flow Hypothesis) suggests that translocation is a passive physical process driven by turgor pressure gradients. However,a major criticism is that it fails to account for the active transport components. Specifically,Ziegler $(1956)$ pointed out that the movement of sugars from mesophyll cells into the sieve tubes often occurs against a concentration gradient,which requires metabolic energy and cannot be explained solely by physical diffusion.

Column-$I$	Column-$II$
$i$. Radial translocation	$a$. Translocation of food from phloem to cortex
$ii$. Tangential translocation	$b$. Translocation of food from phloem to pith
$iii$. Longitudinal translocation	$c$. Translocation of food from source to sink

Which of the following is the main point in disfavour of the Munch theory?

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Explain phloem transport.

The direction of phloem sap in the phloem is ........

Bidirectional elements transportation is seen in:

Match Column-$I$ with Column-$II$.
Column-$I$ Column-$II$
$i$. Radial translocation $a$. Translocation of food from phloem to cortex
$ii$. Tangential translocation $b$. Translocation of food from phloem to pith
$iii$. Longitudinal translocation $c$. Translocation of food from source to sink

Which of the following is responsible for changing the direction of the source and sink in plants?

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