Question

write the experiment to prove sugar is transported through phloem with aphids
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Answer 1

Explanation:

Ringing experiments prove that sugars move through phloem. If the phloem tissue is removed in a ring or girdle, the sugars cannot be transported to roots from aerial parts and plant dies. 

In monocots, like sugarcane have scattered vascular bundle. Thus, meaningful ringing experiments cannot be performed on them as it is impossible to remove phloem strands individually from each vascular bundle. In monocot stem some of the vascular bundles are present deeply embedded inside the stem, whereas some are present on the surface.

Answer 2

The sugar in the form of sucrose is moved into the companion cells and then into the living phloem sieve tube cells by active transport. ... At the sink again active transport is required to move the sugar out of the phloem SAP into the cell where the sugar is used to release energy by the process of respiration



The sugar in the form of sucrose is moved into the companion cells and then into the living phloem sieve tube cells by active transport. ... At the sink again active transport is required to move the sugar out of the phloem SAP into the cell where the sugar is used to release energy by the process of rєѕpírαtíσn....✔

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