Biology · PYQ NEET UG 2016(2)
हिन्दीA 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?
Correct answer · Option 2
Alkaline
Explanation
Phloem sap is alkaline in nature and rich in sugars (sucrose), giving it a high refractive index.