The egg hatches into a tadpole , a gilled, aquatic, larval toad that undergoes metamorphosis into the adult.
(The egg; hatches; into a tadpole) (a gilled, aquatic, larval toad; undergoes; metamorphosis; into the adult)
The egg a gilled, aquatic, larval toad
hatches undergoes
into a tadpole
metamorphosis into the adult