Phylum Annelida

Question 1

Phylum Annelida

Answer 1

The phylum that includes earthworms, leeches, and polychetes.

Question 2

Aortic Arches

Answer 2

Six pairs of arteries in vertebrate embryos, which connect the ventral aorta to the dorsal aorta by running between the gill slits.

Question 3

Clitellum

Answer 3

A raised band encircling the body of worms and some leeches, made up of reproductive segments.

Question 4

Crop

Answer 4

A pouch-like part of the alimentary tract of some animals, especially of birds, where food is partially digested and stored for regurgitation to nestlings.

Question 5

Gizzard

Answer 5

A thick-walled, muscular pouch in the lower stomach of many birds and reptiles that grinds food, often with the aid of ingested stones or grit.

Question 6

Metamerism

Answer 6

The condition of being constructed of a linear series of repeating parts, each being a metamere (body segment) and each being formed in sequence in the embryo, from anterior to posterior.

Question 7

Prostomium

Answer 7

The first body segment in an annelid worm’s body in the anterior end. It is in front of (but does not include) the mouth.

Question 8

Septa

Answer 8

A wall, dividing a cavity or structure into smaller ones.

Question 9

Setae

Answer 9

A stiff hair, bristle, or bristle - like process or part on an organism. On the bodies of many polychaete worms, such as earthworms, are used for locomotion.