The tadpoles which have undergone their embryonic development in water exhibit external gills similar to the larvae of other toads and frogs.
(The tadpoles; have undergone; their embryonic development; L:in water exhibit external gills similar to the larvae of other toads and frogs)
The tadpoles
have undergone
their embryonic development L:in water exhibit external gills similar to the larvae of other toads and frogs