Which of the following is a correct match of an animal and its specific characteristic?

$Monocystis$ belongs to the order:

Consider the following features:
$(a)$ Organ system level of organisation
$(b)$ Bilateral symmetry
$(c)$ True coelomates with segmentation of body
Select the correct option of animal groups which possess all the above characteristics.

Which of the following characteristics are $NOT$ common to both Aves (birds) and Mammalia (mammals)?
$I$ - Homeothermic (warm-blooded) animals.
$II$ - Respire through lungs.
$III$ - Possess a four-chambered heart.
$IV$ - Dioecious (sexes are separate).
$V$ - Possess hair on the skin.
$VI$ - Show internal fertilization.
$VII$ - Possess teeth.

Column $-I$ contains the organs of locomotion and Column $-II$ contains the phyla in which they are found. Select the correct combination of the two columns:

Column $-I$	Column $-II$
$(A)$ Pseudopodia	$(i)$ Mollusca
$(B)$ Parapodia	$(ii)$ Chondrichthyes
$(C)$ Muscular foot	$(iii)$ Protozoa
$(D)$ Fins	$(iv)$ Annelida

The only incorrectly matched pair is