Question

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 ?

• A. Absence of sugar
• B. Acidic
• C. Alkaline
• D. Low refractive index

Answer 1

The correct option is C Alkaline

• The sap present in a plant stem is alkaline in nature. Phloem sap involves pumping out of protons which is a cotransport method for the intake of Sucrose in the dive tubes. Hence it makes the phloem sap slightly alkali.

So the correct answer is 'Alkaline'.