Cyclostomata

How many statements are correct regarding the organisms show in following figure ? a) It belongs to the class Cyclostomata. b) It has 6 to 15 pairs of gill slits . c) Their body is devoid of scales. d) In males, pelvis fins bear claspers .

Which of the following statements is/are not true A. In Urochordata, notochord is present only in larval tail. B. In Cephalochordata, notochord extends from head to tail region. C. Branchiosoma belongs to Hemichordata D. Only one Class of living members, Class Cyclostomata represents the Super Class Agnatha.

Match the columns and find the correct option {:(I,II,III),((1)"Ctenophora",(a)"Ancylostoma",(i)"Bioluminescence"),((2)"Plathyhelminthes",(b)"Pleurobrachia",(ii)"Acoelomate"),((3)"Cyclostomata",(c)"Planaria",(iii)"Migration"),((4)"Aschelminthes",(d)"Ophiura",(iv)"Coelomata"),((5)"Echinodermata",(e)"Hog fishes",(v)"Endoparasite"):}

Match the following {:(A.,"Amphibia",(i),"Air bladder",),(B.,"Mammals",(ii),"Cartilaginous notochord",),(C.,"Chondrichthyes",(iii),"Mammary glands",),(D.,"Osteichthyes",(iv),"Pneumatic bones",),(E.,"Cyclostomata",(v),"Dual habitat",),(F.,"aves",(vi),"Sucking and circular mouth with out jaws".,):}

Match column I with column II and select the correct option form the given codes. {:(,"Column I",,"Column II"),("A.","Amphibia",("i"),"Air bladder"),("B.","Mammals",("ii"),"Cartilaginous notochord"),("C.","Chondrichthyes",("iii"),"Mammary glands"),("D.","Osteichthyes",("iv"),"Pneumatic bones"),("E.","Cyclostomata",("v"),"Dual habitat"),("F.","Aves",("vi"),"Sucking and circular mouth without jaws"):}

Which of the following represents the correct combination without any exception {:(,"Characteristics","Class",),((a),"Mouth ventrcal, gills without operculum, skin with placoid scales, persistent notochord","Chondrichthyes",),((b),"Sucking and circular mouth, jaws absent, integument without scales, paired appendages","Cyclostomata",),((c),"Body covered with feather, skin mosit and glandular, fore-limbs form wings, lungs from wings, lungs with air sacs","Aves",),((d),"Mammary gland, hair on body, pinnae, two pair of limbs","Mammalia",):}

Read the following matches about chordates and it's characteristics. I. Petromyzon - belongs to cyclostomata and are endoparasites on some fishes. II. Scoliodon - a Chondrichthyes in which teeth are modified placoid scales. III. Hippocampus - a cartilaginous aquarium fish known as a sea horse. IV. lchthyophis is a limbless viviparous amphibian with direct development. Select the incorrect statements ?