What type of invertebrate is a worm?

What type of invertebrate is a worm?

annelids
Invertebrate animals commonly called “worms” include annelids (earthworms and marine polychaete or bristle worms), nematodes (roundworms), platyhelminthes (flatworms), marine nemertean worms (“bootlace worms”), marine Chaetognatha (arrow worms), priapulid worms, and insect larvae such as grubs and maggots.

What animal class is a worm?

Earthworms (class Oligochaeta) are familiar terrestrial members of this phylum and leeches (class Hirudinea) are well-known parasitic members of the phylum, most commonly found in freshwater. The polychaete worms or “bristleworms” (class Polychaeta) are the largest group in the phylum Annelida.

Does a worm have a spine?

Sponges, corals, worms, insects, spiders and crabs are all sub-groups of the invertebrate group – they do not have a backbone. Fish, reptiles, birds, amphibians and mammals are different sub-groups of vertebrates – they all have internal skeletons and backbones.

Are earthworms an insect?

Earthworms have no eyes but can sense light. Worms definitely don’t have a backbone or any bones in their slender, tender body so they are invertebrates. The classification of invertebrate includes many animals such as spiders, insects, centipedes, slugs, snails, millipedes and even jellyfish and squid.

Does an earthworm have a backbone?

Invertebrates – animals without a backbone. Sponges, corals, worms, insects, spiders and crabs are all sub-groups of the invertebrate group – they do not have a backbone.

What invertebrate group does a worm belong to?

Worms are invertebrate animals from a variety of distantly related groups. Worms include animals from phyla such as Annelida (earthworms, polychaetes ), Nematoda (roundworms), Nemertea (ribbonworms) and Platyhelminthes (flatworms).

Are earth worms invasive species?

Earthworms as invasive species. Earthworms are invasive species throughout the world. Of a total of about 6,000 species of earthworm, about 120 species are widely distributed around the globe. These are the peregrine or cosmopolitan earthworms. Some of these are invasive species in many regions.

Do earthworms have vertebrates?

Answer and Explanation: Earthworms are neither a reptile nor an amphibian. Earthworms do not possess a vertebral column, as well as many other essential defining features of amphibians and reptiles. Earthworms are worms, and belong to the phylum Annelida which contains all the segmented worms.

What is unique About earthworms?

Earthworms have a simple, but efficient, body shape. Their slightly wedge-shaped heads help create holes in the soil large enough for the bodies to push through. Earthworms’ streamlined bodies flow easily through the soil, instead of being bogged down or caught up by appendages.