What are the Simplest group of invertebrate called?

Answer 1

Sponges (Porifera)Sponges are aquatic animals that make up the phylum Porifera (pohr-IF-uhr-uh). These simple organisms clearly represent the transition from unicellular to multicellular life.

Answer 2

cnidaria

I think Porifera - sponges. You can take them apart cell by cell and they will still regenerate. But it´s not certain they can be grouped with the animals at all, so Cnidaria (jellyfish and anemones) could be correct too. Just keep in mind Porifera comes before Cnidaria.

Answer 3

Sponges from the phylum Porifera. The simplest of all animals. They are the only animals that do not have a nervous system of any kind.
sponges

Answer 4

Probably the simplest animal forms would include or Porifera. These animals have no central nervous system and very little symmetry.

Answer 5

The sponge is the simplest animal, but I'm not sure if that's the answer you're looking for.

Answer 6

A Sea Sponge

Answer 7

sponges

Answer 8

Protozoa