Question

Eosin test measures or apply for

• A. Phloem content
• B. Xylem content
• C. Movement of food
• D. Upward movement of water

Answer 1

The correct option is B Xylem content

The basic function of xylem is to transport water from roots to stems and leaves, but it also transports nutrients. Eosin is the name of several fluorescentacidic compounds which bind to and form salts with basic, or eosinophilic, compounds like proteins containing amino acid residues such as arginine and lysine, and stains them dark red or pink as a result of the actions of bromine on fluorescein. Xylem passage can be detected by the red or pink color.

So the correct option is 'xylem content'.