Structural-Organisation-In-Animals Question 540
Question: Damaged sieve tubes are sealed by deposition of [DMT 2004]
Options:
A) Pectin
B) Callus
C) Suberin
D) Lignin
Show Answer
Answer:
Correct Answer: B
Solution:
Sieve pores are surrounded by a highly referangible substance called callus which is formed by a carbohydrate called callose.
BETA
