A. Sieve tubes
A.
B. Companion cells
B.
C. Phloem parenchyma
C.
D. Phloem fibres
D.
Correct Answer: D
সঠিক উত্তর: D
Explanation
ব্যাখ্যা
Phloem fibres are dead cells that provide structural support to the phloem tissue. While sieve tubes, companion cells, and phloem parenchyma are all living cells within the phloem.