When a plant stem is cut using a suitable met | vedclass

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(D) Phloem sap is the fluid transported through the phloem tissue,which primarily consists of sucrose and other organic solutes. $1$. Phloem sap is kn

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Alkaline nature

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(D) Phloem sap is the fluid transported through the phloem tissue,which primarily consists of sucrose and other organic solutes. $1$. Phloem sap is known to be rich in sugars (mainly sucrose),so the absence of sugar would indicate it is not phloem sap. $2$. The pH of phloem sap is typically alkaline (usually between $7.5$ and $8.5$). $3$. Testing for an alkaline nature is a standard biochemical method to identify phloem sap,as xylem sap is generally acidic. Therefore,the alkaline nature confirms the presence of phloem sap.

When a plant stem is cut using a suitable method,a few drops of fluid are obtained. Which of the following tests,when performed on this fluid,confirms that it is phloem sap?

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