First slide

Phloem Transport: Flow from Source to Sink

Question

pH of phloem sap is

Easy

A

Neutral
B

Acidic
C

Slightly acidic
D

Basic

Solution

Phloem sap is made up of non-reducing sugars, amides, ureides, PGR with minute amount of inorganic salts. Amides and ureides are rich in ${NH}_{2}$ groups and therefore make the overall pH of phloem sap basic.

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