Question

classify phylum porifera up to orders with suitable examples​

Answer 1

Answer:

• Phylum Porifera Characteristics.

• Class 1. Calcarea (L., calx=lime) or Calcispongiae (L., calcis= lime+ spongia= sponge)

• Class 2. Hexactinellida (Gr., hex=six + actin=ray) or Hyalospongiae (Gr., hyalos=glass+ spongos= sponge)

• Class 3. Demospongiae (Gr., dermos= frame+ spongos= sponge)

Answer 2

Answer:

poriferan animals have pores all over the body which leads an open circulatory system for food and water.

they have an exoskeleton .

Explanation:

see the attached picture made by me just for you.