Which of the following is correctly matched?

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(C) $1$. In $Reptiles$,the heart is generally three-chambered (two atria and one partially divided ventricle),except in crocodiles which have a four-c

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Bony fishes: Mouth is generally terminal.

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(C) $1$. In $Reptiles$,the heart is generally three-chambered (two atria and one partially divided ventricle),except in crocodiles which have a four-chambered heart. Thus,this statement is not universally true for all reptiles.$2$. In $Amphibians$,the endoskeleton is mostly bony,not pneumatic. Pneumatic bones are a characteristic feature of $Aves$ (birds).$3$. In $Bony 	ext{ } fishes$ $(Osteichthyes)$,the mouth is generally terminal,whereas in $Cartilaginous 	ext{ } fishes$ $(Chondrichthyes)$,the mouth is ventral. This statement is correct.$4$. In $Molluscs$,locomotion occurs via a muscular foot,not tube feet. Tube feet are a characteristic feature of $Echinoderms$.

List-$1$ (Branch of Science)	List-$2$ (Field of Study)
$a$. Mycology	$p$. Study of birds
$b$. Ornithology	$q$. Study of worms
$c$. Herpetology	$r$. Study of fishes
$d$. Ichthyology	$s$. Study of fungi
	$t$. Study of reptiles/amphibians

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