Plant Kingdom Question 319
Question: Which one controls dehiscence of sporangium in Dryopteris [CBSE PMT 1995]
Options:
A) Annulus
B) Tapetum
C) Sorus
D) Indusium
Show Answer
Answer:
Correct Answer: A
Solution:
They develop a thickening along their radial and inner tangential walls.
This layer is called annulus.