I can think of 8:
- Porifera (sponges)
- Cnidaria (jellyfish and anemones)
- Mollusca (snails, squids)
- Platyhelminthes (flatworms)
- Nematoda (roundworms)
- Annelida (ringworms, leeches)
- Arthropoda (insects, arachnids, crustaceans and some other bits)
- Echinodermata (starfish, sea urchins and cucumbers)
- Chordata (also includes the vertebrates, but the invertebrate bits are Amphioxus and the tunicates)
Anyone got more? I think I got them all.
3 of the water invertebrate groups are the annelids, arthropods and crustacean.
Invertebrate 1: Thomas Hinkle Invertebrate 2: You
One of the characteristics of many invertebrate groups is that there bodies are made of very many segments. Examples include the worms, spider, starfish and insects.
Well its sort of confusing, see since the invertebrate group has more groups than the vertebrate than that means invertebrate would have more organisms.
The eight groups are:* Mollusks * Echinoderms * Arthropods * Annelids * Nematodes * Porifera* Platyhelminthes * Coelenterates Or go to:What_are_the_8_groups_of_invertebrates
Two groups of five is ten
An invertebrate is an organism that lacks a backbone. The 6 groups of invertebrates are sponges, cnidarians, worms, mollusks, echinoderms and arthropods.
Arthropods' bodies are segmented into three parts. The head, the thorax, and the abdomen
The horseshoe crab is an example of an animal that has both vertebrate and invertebrate features. It has a hard exoskeleton like an invertebrate, but also possesses a primitive form of a segmented backbone similar to vertebrates.
7 groups of ten
Ten of them.
there are 10 groups of 10