Sponge. A simple invertebrate that has a hollow body with a single opening and lives underwater. Sponges are the simplest kind of invertebrate. They do not have symmetry.
Additionally, what are 10 invertebrates? Types of Invertebrates
protozoans – single-celled organisms such as amoebas and paramecia.
annelids – earthworms, leeches.
echinoderms – starfish, sea urchins, sea cucumbers.
mollusks – snails, octopi, squid, snails, clams.
arthropods – insects, spiders, crustaceans such as shrimp, crabs, lobsters.
Also Know, what are the main group of invertebrates?
The Invertebrates unit explores six groups of invertebrates— poriferans (sponges), cnidarians (such as sea jellies and corals), echinoderms (such as sea urchins and sea stars), mollusks (such as octopuses, snails, and clams), annelids (worms), and arthropods (such as insects, spiders, and lobsters).
What are the nine classes of invertebrates?
Classification of invertebrates
Sponges (Porifera)
Comb jellies (Ctenophora)
Hydras, jellyfishes, sea anemones, and corals (Cnidaria)
Starfishes, sea urchins, sea cucumbers (Echinodermata)
Flatworms (Platyhelminthes)
Round or threadworms (Nematoda)
Earthworms and leeches (Annelida)
