Q. Which of the following statements is true?
A) The collenchyma occurs in layers below the epidermis in monocotyledonous plants
B) Sclerenchyma cells are usually dead and without protoplasts
C) Xylem parenchyma cells are living and thin-walled and their cell walls are made up of lignin
D) The companion cells are specialised sclerenchymatous cells
Explanation
Sclerenchyma are considered thick-walled lignified supportive tissue characterised by the absence of living protoplast. Their principal function is to provide mechanical support.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.