___ are the organisms that live on the host's body and derive their nutrients from it.
Amphibians
Mammals
Reptiles
Parasites
Intervertebral disc is found in the vertebral column of
(a) birds (b) reptiles (c) mammals (d) amphibians
Which one of the following statements is incorrect? (a) Birds and lands snails are uricotelic animals (b) Mammals and frogs are ureotelic animals (c) Aquatic amphibians and aquatic insects are ammonotelic animals (d) Birds and reptiles are ureotelic