Q. The phloem of angiosperms differs from that of other vascular plants by the presence of
A) Vessels
B) Companion cells
C) Tylosoides
D) Albuminous cells
Explanation
Companion cells are thin-walled elongated cells connected with sieve tube cells through plasmodesmata, in phloem cells. They are the characteristic of angiosperms, function in controlling metabolic activities of sieve tube cells by nucleus of companion cells.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.