Give the names of the following:
$(a)$ $A$ limbless animal
$(b)$ $A$ cold-blooded animal
$(c)$ $A$ warm-blooded animal
$(d)$ An animal possessing dry and cornified skin
$(e)$ An animal having a canal system and spicules
$(f)$ An animal with cnidoblasts

(N/A) Ichthyophis (a limbless amphibian).
$(b)$ Frog (an ectothermic or cold-blooded animal).
$(c)$ Parrot (an endothermic or warm-blooded animal).
$(d)$ Python (a reptile with dry and cornified skin).
$(e)$ Sycon (a sponge belonging to Phylum Porifera).
$(f)$ Obelia (a cnidarian possessing cnidoblasts).