Question

In these animals, heart is mostly found in the
ventral side of the body. There are five groups
or classes of vertebrates. These are: Pisces,
Amphibians, Reptiles, Aves and Mammals.
S
y
a
Class Pisces
Class Pisces include fishes. Fishes are cold
blooded aquatic animals with paired fins for
swimming and gills for breathing. Their body is
spindle-shaped or streamlined which provide
less resistance and help them to swim. The
body is covered with scales. Fishes have two-​

Answer 1

Answer:

fishes have two chambered hearts.