Select the correct option in respect of characteristics of each group.
`{:("Cyclostomes","Chondrichthyes","Osteichthyes"),((i)"Suking mouth","Ventral mouth","Terminal mouth "),((ii)"Scales absent","Placoid scales","Cycloid/Ctenoid scales"),((iii)"Marine","Marine","Marine adn freshwater"),((iv)6-15"pairs of gills",5-7 "pairs of gills without operculum",4 "pairs of gills with operculum"):}`

Select the corect combinations is respect of characterstics of cartilaginous and bony fishes . {:("Character","Chondrichthyes","Osteichthyes"),((i)"Habitat","Freshwater","Marine"),((ii)"Scales","Placoid scales","Cyloid/Ctenoid"),((iv)"Gills","4 pairs","5-7 pairs"):}

Select the corect combinations is respect of characterstics of cartilaginous and bony fishes . {:("Character","Chondrichthyes","Osteichthyes"),((i)"Habitat","Freshwater","Marine"),((ii)"Scales","Placoid scales","Cyloid/Ctenoid"), ((iii)"Mouth","Suking mouth","Ventral mouth"),((iv)"Gills","4 pairs","5-7 pairs"):}

Which of the following is/are not the characteristics of the Class Osteichthyes? (i) Body is streamlined and mouth is terminal. (ii) Gills are convered by operculum. (iii) Skin convered with cycloid and placoid scales. (iv) Many of them are viviparous.

Which of the following is/are not the characteristics of the Class Osteichthyes? (i) Body is streamlined and mouth is terminal. (ii) Gills are convered by operculum. (iii) Skin convered with cycloid and placoid scales. (iv) Many of them are viviparous.

Which of the following is/are not the characteristics of the Class Osteichthyes? (i) Body is streamlined and mouth is terminal. (ii) Gills are convered by operculum. (iii) Skin convered with cycloid and placoid scales. (iv) Many of them are viviparous.

Which of the following represents the correct combination without any exception {:(,"Characteristics","Class",),((a),"Mouth ventral, 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 moist and glandular, fore-limbs form wings, lungs with air sacs","Aves",),((d),"Mammary gland, hair on body, pinnae, two pair of limbs","Mammalia",):}

Which of the following pairs are correct matched ? {:("Animal","Feature"),((i)"Crocodile","4-chambered heart"),((ii)"Platypus","-Viviprity"),((iii)"Pigeon","-Pneumatic bones"),((iv)"Saw fish","- Ctenoid scales"):}

Which of the following pairs are correct matched ? {:("Animal","Feature"),((i)"Crocodile","4-chambered heart"),((ii)"Platypus","-Viviprity"),((iii)"Pigeon","-Pneumatic bones"),((iv)"Saw fish","- Ctenoid scales"):}

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",):}