Structural Organisation In Animals Question 272
Question: Xylem vessels and phloem companion cells are generally absent in
Options:
A) Ferns and angiosperms
B) Ferns and gymnosperms
C) Bryophytes and pteridophytes
D) Pteridophytes and thallophytes
Show Answer
Answer:
Correct Answer: B
Solution:
Vessels are absent in pteridophytes and gymnosperms (except Ephedra, Gnetum, Selaginella, Pteridium).
Companion cells are not found in pteridophytes and gymnosperms.
BETA
