Chapter 12

A distinctive feature of the phylum Echinodermata is the (a) excretory system (c) antimeres (b) spiny skin (d) notochord

Sea stars have a functional (a) excretory system (c) water vascular system (b) respiratory system (d) head

Spines and plates made of calcium form the echinoderm .....

Water enters the sea star by way of the (a) madreporite (c) ring canals (b) stone canals (d) cardiac stomach

In the sea star a light-sensitive cyespot is located (a) near the madreporite (c) next to the ampulla (b) adjacent to the stomach (d) at the tip of each arm

The process in which embryos obtain nourishment from the yolk in the egg is described as (a) viviparous (c) amnocoete (b) ovoviviparous (d) osmosis

The dogfish is a (an) (a) amphibian (c) bony fish (b) lamprey (d) shark

Dipnoi is the class of the (a) sharks (c) lungfish (b) skates (d) cyclostomes

Teleosts are the (a) sharks (c) lamprey (b) lung fish (d) bony fish

The gill covering of the bony fish is the (a) spiral valve (c) cranium (b) operculum (d) chorion

An example of a monotreme is the ..20..

The sperm of fish are known as ..24..