Q. In $Dryopteris,$ the opening mechanism of sporangium is effectively operated by
A) Stalk
B) Stomium
C) Annulus
D) None of these
Explanation
In $Dryopteris,$ the mechanism of sporangium opening is effectively operated by stomium, when stomium ruptures the spores are discharged.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.