The food which is prepared by the process of photosynthesis in the leaves of a plant has to be transported to other parts like stem, roots, branches, etc. Therefore this food is transported to other parts of the plant through phloem.
A few drops of sap were collected by cutting a plant stem. The sap was tested chemically. Which one of the following results indicate that it is phloem sap?

Options

A. acidic
B. alkaline
C. low refractive index
D. absence of sugar

Answer

B