Classification:

• Phylum-Porifera
• Class-Demospongia
• Order- Monaxonida
• Genus-Spongilla

Comments:

1. 1.Spongilla is known as a freshwater sponge.
2. 2.The colony of spongilla is profusely branched exhibiting various shades of green due to the presence of Zoochlorellae, a green alga in the tissues.
3. 3.The body wall consists of a very thin dermal membrane provided with dermal pores or Ostia and several oscula.
4. 4.The canal system is rhagon type.
5. 5.Reproduction both sexual and asexual.
6. 6.Asexual reproduction by gemmules.
7. 7.Sexual reproduction is by sperm and ova.
8. 8.Gemmules are protected by the amphidisc spicules.
9. 9.Larva is free swimming.

Source:

1. Practical Zoology Invertebrates by S.S.Lal. 2. A Manual of Practical Zoology Chordates by Dr. P.S. Verma.