Question

Distinguish between: Cyclostomata and Pisces. Select the correct answer from above options Science questions and answers, Science questions pdf, Science question bank, Science questions and answers pdf, mcq on Science pdf,Science book pdf,Science pdf notes,Science lecture notes,Science of light,maxwell Science,Science proposed by,electromagnetic theory engineering physics,Science nptel

Answer 1

Cyclostomata: 1. Cyclostomata are the poorly evolved first class of vertebrate animals. 2. Cyclostomata have circular jawless mouth with suckers. 3. Paired appendages are absent in cyclostomates. 4. Cyclostomes have soft skin which is without any scales. 5. Endoskeleton is cartilaginous. 6. Examples: Petromyzon, Myxine, etc. Pisces: 1. Pisces are the better evolved class of vertebrates which is well adapted for aquatic living. 2. Pisces have mouth with upper and lower jaws. Teeth are present in the mouth. 3. Paired and unpaired fins present in all kinds of fishes. 4. Fishes have different types of scales on the body. 5. Endoskeleton may be cartilaginous, or it may be bony. 6. Examples: Shark (Scoliodoh), rays which are cartilaginous fishes and pomfret, makerel, sardines, rohu which are bony fishes.