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A few drops of sap were collected by cut...

A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap ?

A

Acidic

B

Alkaline

C

Low refractive index

D

Absence of sugar

Text Solution

Verified by Experts

The correct Answer is:
B
The sap of phloem is alkaline (pH 8.0 to 8.4 ), while the sap of xylem is acidic (pH 5.2 to 6.5).
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