Q. Which of the following is not a part of epidermal tissue system?
A) Companion cells
B) Trichomes
C) Root hairs
D) Guard cells
Explanation
Companion cells are characteristic elements of phloem tissue associated with the sieve tubes in the angiosperms. They are absent in pteridophytes and gymnosperms.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.