Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.

Use Coupon: CART20 and get 20% off on all online Study Material

Total Price: Rs.

There are no items in this cart.
Continue Shopping

Please explain about phylum porifera?Give main points? And give examples of this phylum?

Please explain about phylum porifera?Give main points? And give examples of this phylum?


2 Answers

25763 Points
2 years ago

General characteristics of Phylum Porifera

  1. Kingdom: Animalia
  2. Habitat: Aquatic, mostly marine, few are terrestrial
  3. Habit: They are solitary or colonial.
  4. Grade of organization: cellular grade of body
  5. Shape: Body shape is variable, mostly cylinder shaped
  6. Symmetry: Asymmetrical or radially symmetrical.
  7. Germ layer: Diploblastic animals. The adult body wall contains two layers, outer dermal layer and inner gastral layer. In between these two layers, there is a gelatinous and non-cellular mesoglea containing numerous free amoeboid cells.
  8. Coelom: Absent; acoelomate but spongocoel is present
  9. Surface of the body has numerous perforation called ostia (for the entry of water) and a large pore at the apex called osculum (for the exit of water).
  10. Water canal system present
  11. Endoskeleton: Either calcareous spicules (calcium carbonate) or siliceous spicules (silica) or sponging fibers (protein).
  12. Nutrition: holozoic
  13. Digestion: Intracellular
  14. Nervous system: absent
  15. Circulatory system: absent
  16. Reproduction:
  • Asexual: by budding or gemmule or regeneration
  • Sexual: gamatic fusion
  1. Fertilization: Internal
17 Points
2 years ago
Phylum porifera :
It is commonly known as sponges.
It has spores in the body.
It has water transport system - the water enters through ostia and it comes out through oscullum.
Nervous system is absent.
Cellular level of organisation.
Mostly aquatic.
Examples : bath sponge

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy


Get your questions answered by the expert for free