Give the names of classes of phylum Porifera and their respective exam

1.	Give the names of classes of phylum Porifera and their respective examples.
Answer» 1. Class – Calcarea (Calcispongiae) • The skeleton is of spiculues made up of CaCO3. • Examples – Leucosolenia, Syncon, Grantia, Leucilla etc. 2. Class – Hexactinillida (Hyalospongiae) • The skeleton is of spicules made up of silica. • Examples – Hyalomena, Euplectella, Pheronema etc. 3. Class Demospongiae • The skeleton is of sponging fibres. • Examples – Euspongia, Spongilla, Chalina, Cliona Spheceospongia etc.

Give the names of classes of phylum Porifera and their respective examples.

Answer»

1. Class – Calcarea (Calcispongiae)

• The skeleton is of spiculues made up of CaCO3.

• Examples – Leucosolenia, Syncon, Grantia, Leucilla etc.

2. Class – Hexactinillida (Hyalospongiae)

• The skeleton is of spicules made up of silica.

• Examples – Hyalomena, Euplectella, Pheronema etc.

3. Class Demospongiae

• The skeleton is of sponging fibres.

• Examples – Euspongia, Spongilla, Chalina, Cliona Spheceospongia etc.