Q. In $Selaginella,$ trabeculae are the modification of
A) Epidermal cells
B) Cortical cells
C) Endodermal cells
D) Pericycle cells
Explanation
The stem of $Selaginella,\ Kraussiana$ shows distelic condition. Some air spaces develop between the endodermal cells isolating two steles from the cortex. The endodermal cells elongate to form trabeculae connecting the two tissues. The stele remains suspended by this unicelled (rarely multicelled) trabeculae.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.