Question

'P-protein' is a constituent of

• A. Sieve tube elements
• B. Xylem parenchyma
• C. Parenchyma
• D. Pericycle

Answer 1

The correct option is A Sieve tube elements

P-protein (phloem protein) is a protein found in large amounts in the sap-conducting sieve elements of phloem tissue (sieve tube) in plants. It takes various forms in the mature sieve element, depending on plant species, ranging from a network of filaments to discrete crystalline bodies.

So, the correct answer is option A.