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?
(a) Acidic
(b) Alkaline
(c) Low refractive index
(d) Absence of sugar
plant stem by a suitable method. The sap was tested
chemically. Which one of the following test results
indicates that it is phloem sap?
(a) Acidic
(b) Alkaline
(c) Low refractive index
(d) Absence of sugar