Name the cap which covers the gills in fishes:

Observe fish in an aquarium. They open close their mouths and the gill-slits (or the which covers the gill-slits) behind their eyes open and close. Are the timings of the opening & closing of the mouth and gill-slits coordinated in manner?

Name two animals which have no gills?

Fish gills are:

Name the phylum in which pharyngeal gill slits are present but notochord is absent.

Name the metal which was bioaccumulated in liver, gills and kidney of fish in Edulabad water reservoir in adilabad district.

Gill cover is absent in

Name two animals which breathe through gills

Name three fishes which are on the verge of being extinct?

Gill clefts which do not bear gills in chordates are called

Gviven below few animals. Name the phylum ot which they belong : Silver fish, Cuttel fish, Jelly fish, Star fish.