Classification of Animals Test - 2

All arthropods have bilateral symmetry, segmented bodies, and hard exoskeletons. Another character inherited by all arthropods is jointed legs.

Pisces include fishes and other aquatic animals. They have streamlined and scaly bodies, and are oviparous. They respire through gills and not lungs.

Pisces are aquatic, gill-bearing animals and they cannot survive outside water.

Amphibians are small vertebrates that need water, or a moist environment, to survive. The species in this group include frogs, toads, salamanders, and newts. All can breathe and absorb water through their very thin skin. They can live on both land and water.

Snakes, fish and frogs are cold-blooded, while birds are warm-blooded.

Snake is a reptile, whereas all other options are amphibians.

Reptiles are cold-blooded, and not warm-blooded.

The toad heart has 3 chambers: two atria and a single ventricle. The atrium receives deoxygenated blood from the blood vessels (veins) that drain the various organs of the body. The left atrium receives oxygenated blood from the lungs and skin (which also serves as a gas exchange organ in most amphibians).

The only reptile that has four-chambered heart is a crocodile.