How many of the following characteristics are common to both Amphibians and Reptiles?
$a$ - Type of fertilization
$b$ - Cold-blooded (Poikilothermic)
$c$ - Development
$d$ - Oviparous
$e$ - Coelomate
$f$ - Bilateral symmetry

Select the correct matching pair from the following.

Find the mismatched pair regarding the exoskeleton.

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.

Which is the correct match based on the characteristics of animals?

Column-$I$	Column-$II$ (Phylum)	Column-$III$ (Example)
$I$. Water canal system	$a$. Porifera	$p$. Sea lily
$II$. Proboscis	$b$. Hemichordata	$q$. Sepia
$III$. Water vascular system	$c$. Mollusca	$r$. Sycon
$IV$. Shell	$d$. Echinodermata	$s$. Balanoglossus

What is common between $Ascaris$ $lumbricoides$ and $Anopheles$ $stephensi$?