Which of the following pairs is incorrectly matched?

Based on cellular mechanisms, there are two major types of regeneration found in animals. Which one of the following is the correct example of the type mentioned?

Differentiate between Chondrichthyes and Osteichthyes.

Which of the following statements is true for all four: $Spongilla$,$Leech$,$Dolphin$,and $Penguin$?

Match the following:

Column-$I$	Column-$II$
$(a)$ Trygon	$(i)$ Echinodermata
$(b)$ Ascidia	(ii) Viviparous
$(c)$ Asterias	(iii) Chondrichthyes
$(d)$ Kangaroo	(iv) Oviparous
$(e)$ Penguin	$(v)$ Urochordata

Match List-$I$ with List-$II$.

List-$I$	List-$II$
$(a)$ Metamerism	$(i)$ Coelenterata
$(b)$ Canal system	$(ii)$ Ctenophora
$(c)$ Comb plates	$(iii)$ Annelida
$(d)$ Cnidoblasts	$(iv)$ Porifera

Choose the correct answer from the options given below.