Diploblastic animals occur in:

In which of the following is an open circulatory system found?

Column $I$	Column $II$
$(A)$ Limbless reptile	$(i)$ Lamprey
$(B)$ Jawless vertebrate	$(ii)$ Salamander
$(C)$ Amphibian	$(iii)$ Snake
$(D)$ Cartilaginous fish	$(iv)$ Shark
$(E)$ Flightless bird	$(v)$ Ostrich

Match items in column $I$ with those given in column $II$.

Column $-II$ below consists of brief descriptions of organisms in column $-I$. Which of the following is an incorrect match between column $-I$ and column $-II$?

Column $-I$	Column $-II$
$A$. Millipede	Terrestrial organism with two pairs of jointed appendages attached to each of its many body segments and respires through trachea.
$B$. Nereis	Numerous setae on lateral appendages called parapodia.
$C$. Taenia solium	Body is covered with cuticle,alimentary canal absent.
$D$. Ctenophores	Radially symmetrical,devoid of cnidoblasts,polyp stage present in their life cycle.

The adult stage of a housefly or mosquito is known as:

Which of the following options represents the correct ascending order of complexity in animal body organization?