01 Chordates Worksheet Complete PDF

Preview

Summary

Answers for 1st assignment...

Description

1 Review: Chordates

Name

Alena Chantaratananond

A

Monophyly

grouping or clade includes an ancestor and all of its descendants.

A

Paraphyly

group includes a common ancestor but not all of its descendents.

A

Polyphyly

group does not include a common ancestor.

A Crown common ancestor. A Stem crown group.

group is a monophyletic group that includes living species and their most recent

group is a paraphylectic group with no living species that includes the ancestor of a

List the four defining characteristics of chordates. a. b. c. d.

Notochord Hollow Dorsal Nerve cord Pharyngeal slits post anal tail

Complete the phylogenetic tree below, filling in the three subclasses of chordates.

In vertebrates, the

Cranium

protects the brain.

In vertebrates, the

Vertebral Column

protects the dorsal nerve cord.

Match each group of vertebrates below with the appropriate description. Hagfish and lampreys

A. terrestrial vertebrates tied to moist habitats

S harks, skates, rays

B. jawed fishes with cartilage skeleton

Ray-finned fishes

C. jawed fishes with bony skeleton

Lobe-finned fishes

D. terrestrial vertebrates that can live in dry habitats

A  mphibians

E. jawless fishes

R  eptiles, including birds Mammals

2 Complete the phylogenetic tree of mammals below, filling in the following subclasses, infraclasses, and orders: Protetheria, Theria, Eutheria, Metatheria, Monotremata....