Questions in diversity-of-life

Select	Question
	Swim bladder or air bladder is present only in
	Pristis belongs to the class
	Bony plates and scutes are found in addition to scales in
	Pharyngeal gill slits are found in
	The fish Wallago is commonly called as 'fresh water shark', because it is
	True fishes possess gills and fins. Which of the following is not a true fish
	Which of following is a true fish
	Cartilaginous fishes are characterised by the presence of
	Heart of fishes is
	Hippocampus (Sea Horse) belongs to the class