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 indicates that it is phloem sap ?

Answer 1

Answer:

Phloem sap is generally alkaline with pH ranging from 7.3 - 8.5 and contains high levels of K

+

and Mg

2+

. Hence, the chemical test for alkalinity will help to identify that the exudated sap is phloem sap.

So, the correct answer is 'Alkaline'.

October 15, 2019

Answer 2

Answer:

that it contains sugars and aminoacids

Explanation:

phloem is responsable for transportation

of food material whereas xylem responsible for water transportation