NEET Biology question
Not in NEET syllabus
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: (B)
Solution
Phloem sap is typically slightly alkaline (pH around 8), in contrast to xylem sap, which tends to be more acidic/neutral and dilute.
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