Is an annelid an amphibian?

Is an annelid an amphibian?

Worms are neither insects nor amphibians; they are annelids.

How are annelids classified?

Most authors accept the annelids as having three major classes: Polychaeta, Oligochaeta, and Hirudinea. The Branchiobdellida are considered an order of Hirudinea, but they have been considered as a separate class in the past or as an order of Oligochaeta.

Which annelid is parasitic?

The body of an annelid is divided into repeating sections called segments with many internal organs repeated in each segment. 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.

Which annelid is a parasite on snail and frog?

Acanthobdella

What is Metamerism in annelida?

Metameric segmentation or metamerism is an architectural body plan in some animals in which the similar body segments and organ systems are serially repeated one after another. The similar body segments are called metameres or somites.

Are Hirudinea dioecious?

Leeches (Hirudinea), also monoecious, have one pair of ovaries and a segmentally arranged series of testes with duct systems basically similar to those of earthworms. Pelecypods may be either monoecious or dioecious, but the gonads are usually paired.

How many annelida species are there?

9000 species

What is the largest annelid?

Michrochaetus rappi

Are leeches mollusks?

Leeches are worms, belonging to phylum Annelida and subclass Hirudinea. They belong to Phylum Mollusca and class Gastropoda. They basically live on land and sea.

Are annelida unicellular?

earthworm belongs to phylum annelida of kingdom animalia.. and in animalia all animals are multicellular and heterotrophs.. so yes earthworm is multicellular.. all animals are made up of number of cells and so all possess mulicellularity..

Are worms unicellular?

Worms are the multicellular organisms belonging to phyla Annelida, Nematoda or Platyhelminthes with long rounded or flattened bodies. …

Is annelida multicellular or unicellular?

Originally Answered: Is a earthworm unicellular or multi cellular? earthworm belongs to phylum annelida of kingdom animalia.. and in animalia all animals are multicellular and heterotrophs.. so yes earthworm is multicellular.. all animals are made up of number of cells and so all possess mulicellularity..