The free-swimming larva, called a tadpole, has a muscular tail and is similar in appearance to a frog tadpole.
(The free-swimming larva; called; a tadpole) (The free-swimming larva, called a tadpole; has; a muscular tail) (The free-swimming larva, called a tadpole; is; similar in appearance to a frog tadpole)
The free-swimming larva The free-swimming larva, called a tadpole The free-swimming larva, called a tadpole
called has is
a tadpole
a muscular tail
similar in appearance to a frog tadpole