Which one controls dehiscence of sporangium in Dryopteris?

Annulus

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Tapetum

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Sorus

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Indusium

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Annulus
In Dryopteris, the annulus and the stomium help in the dehiscence of the sporangium and dispersal of spores. At maturity, the sporangium dehisces by drying action, which exerts pressure on mouth assisted by shrinkage of the annulus. Lastly mouth of sporangium open and spores are liberated.

Suggest Corrections