Question

short notes about Phylum Porifera​

Answer 1

Answer:

Explanation:

 

Phylum : Porifera. Important characters: Their body possesses numerous, minute pores called ostia. They are aquatic, mostly marine and few are fresh water.

Answer 2

Porifera:

→ These are having body of organisation as cellular.

→ These are aquatic.

→ There's having pores in their bodies that are known as ostia.

→ These are asymmetrical.

→ These are having 2 germ layers i.e diploblastic.

→ No body cavity is present, hence they're acoelomate.

→ Water canal system is highly developed - exchange of gases, intake of food, and removal of waste.

→ Their skeletal is made up of spongin fibres.

→ Hermaphrodite (Bi sexual)

→ Mode of reproduction ; (External), (Internal - Indirect), Larval stage.

→ Example - Scypha