Vertebrates

Some vertebrates belong to the phylum Chordata.

• True

• False

Chordates have bilateral symmetry.

• True

• False

Point out the characteristics of the phylum chordata:

(puede que no estén todas)

• They have air bladder.

• They have a notochord.

• They have pyloric threads.

• They have a postanal tail.

• They have a dorsal nerve cord.

The phylum Chordata is divided into four subgroups.

• True

• False

Definition of Cephalochordates

• Keep the notochord, the air bladder, the pharyngeal clefts and the tail throughout their life. They all are terrestial animals.

• Keep the notochord, the dorsal nerve cord, the pharyngeal clefts and the tail throughout their life. They all are ugly animals.

• Keep the notochord, the nerve cord, the pharyngeal clefts and the tail throughout their life. They all are marine animals.

Mark the groups of vertebrates

• Amphibians

• Gastropods

• Echinoderms

• Annelids

• Birds

The internal skeleton of vertebrates has various functions:

• Protects the internal organs

• It gives the animal a shape

• Protects the caudal fin

• Help animals to have the ability to slide on the ground.

• The muscles are attached to it to allow movement.

Fishes They have a short fusiform body.

• True

• False

Fishes have 2 subgroups: Bony fish and Conchita fish

• True

• False

Urodela: Frogs and toads are included in this order.

• True

• False