Sponges with skeleton of only spongin fibres occur in

Calcarea

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

Demospongiae

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

Hexactinellida

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

All the above

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

Open in App

Solution

The correct option is B Demospongiae
A. Sponges of class Clacarea has skeleton of calcareous spicules made up of calcium carbonate.
B. Sponges of class Demospongiae has skeleton of spongin fibres.
C. Sponges of class Hexactinellida has skeleton of siliceous spicules made up of silica.
So, the correct answer is 'Demospongiae'.

Suggest Corrections