Anatomy Of Flowering Plants Question 120
Question: In the given figure of phloem tissue, identify the marked part (1, 2 and 3) which help in maintaining the pressure gradient in the sieve tubes.
Options:
A) 1
B) 2
C) 3
D) None of the above
Show Answer
Answer:
Correct Answer: C
Solution:
[c] In the given fig.
of phloem tissue 1, 2 & 3 are respectively sieve tube, phloem parenchyma and companion cells.
Companion cells (3) are specialised parenchymatous cells adjacent to a sieve tube in the phloem of flowering plants.
It is believed to regulate the flow of nutrients through the tube.
BETA
