Identifying Worms

Tapeworm:

-Phylum: Platyhelminthes

-Class: Cestoda

-Info: Flatworms: Tapeworms have a bilateral symmetry. They are semented. They  live in the digestive tract of vertebrates as adults, and in the bodies of animals when they are young.

Hookworm:

-Phylum: Nematode

-Class: Secernentea

-Info: Hookworms have a bilateral symmetry, and are segmented worms. They live in the small intestine of the host. It sucks and ingests your blood.

Earthworm:

-Phylum: Annelida

-Class: Oligochaeta

-Info: An earthworm is segmented and has a   bilateral symmetry.  These are the worms you commonly see in dirt.

Amphioxus:

-Phylum: Subphylum: Cephalochordate

-Class: Could not figure out what class it is in. 

-Info: Amphioxi are representatives of a subphylum. They are usually found buried in sand. In Asia, they are harvested commercially as food for humans and animals.

Roundworm:

-Phylum: Nematode

-Class: Arachnida

-Info: Roundworms have  bilateral symmetry, with a pseudoceolom. They are not segmented. They are covered by a tough outer layer called a cuticle. The cuticle does not grow; it must be shed as the worm grows. After shedding, a new cuticle is made.