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Biology · PYQ NEET UG 2016(2)

हिन्दी

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?

  1. Acidic
  2. Alkaline
  3. Low refractive index
  4. Absence of sugar

Correct answer · Option 2

Alkaline

Explanation

Phloem sap is alkaline in nature and rich in sugars (sucrose), giving it a high refractive index.
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