Question

List out few unique characters of phylum porifera to phylum hemichordata

Answer 1

Answer:

Characters of phylum porifera to phylum hemichordate

Explanation:

1. They are exclusively marine, solitary or colonial, mostly tubicolous.

2. Their body is soft, fragile, vermiform, unsegmented, bilaterally symmetrical, and triploblastic.

3. The body is divisible into proboscis, collar, and trunk.

4. Body wall with a single-layered epidermis with mucous glands. No dermis.

5. Coelom enterocoelous, divisible into protocoel, mesocoel and metacoel.

Examples: Balanoglossus, Saccoglossus, Rhabdopleura, Atubaria, Dendrograptus.