Give an example of the following
(a) Roundworm
(b) Fish possessing poison sting
(c) A limbless reptile / amphibian
(d) An oviparous mammal
(a) Roundworm - Ascaris
(b) Fish possessing poison sting - Trygon
(c) A limbless reptile/amphibian - Ichthyophis
(d) An oviparous mammal - Duck billed platypus.