It has a squat shape and broad, flattened snout. Examples of organisms belonging to class mammalian – Felis (Cat), Macropus (kangaroo), Homo (Humans), Ornithorhynchus (Platypus – oviparous) A. Ornithorhynchus B. Macropus. 9. B) Duck done clear. Respiration is by lungs. Fig. The platypus is a small, semiaquatic, oviparous mammal that lives in freshwater basinsalong Eastern Australia and Tasmania. The platypus (Ornithorhynchus anatinus), which lives in Australia and adjacent areas, is one of the strangest animals in existence.. Summary. External fertilization involves the passage of the sperm to the ova through an ambient medium, usually water. The other family The genus is one of several to have been placed with the family Ornithorhynchidae whose only living member is the platypus. Biology. Physics. External ears or pinnae are present. Maths. Heart is four-chambered. Class 9. Subjects. Oviparous-Ornithorhynchus (Platypus) Viviparous-Macropus (Kangaroo) Fig. Metameric segmentation is found in Annelida not Nematoda (Ascaris).Crocodile has four-chambered heart.Sea horse and flying fish belong to class-Pisces. They have consequently been objected to most strenuously by those physiologists who maintain the oviparous nature of this animal*: and various ex- Class 12. abdominal glands of the Ornithorhynchus have been supposed to imply a necessary belief in the accordance of its mode of generation with that of the higher orders of Mlammalia. Class 10. Class 6. Platypus. Platypus are also venomous (males only) and find their prey … Salient features of different phyla of the Animal Kingdom. They are homoiothermous. Class 11. C) Monotreme mammal done clear. Class 7. Oviparous animals may fertilize their eggs either externally or internally. Classes. Sexes are separate and fertilization is internal. Share these Notes with your friends Prev Next > You can check our 5-step learning process. View Solution play_arrow; question_answer9) Marsupials are [CPMT 1983] A) Oviparous done clear. Both oviparous and ovoviviparous done clear. Social Science. That is to say, it lays eggs, rather than giving birth to live young.However, they do nurse their young the way a viviparous mammal would. Class Mammalia Homework Help ← Platypus, Duckbill Ornithorhynchus anatinus Ornithorhynchus anatinus In the past, platypuses were killed for their pelts but nowadays they are listed as endangered species and are protected by law. Duckbill platypus is the only mammal which lays egg and also bear mammary gland, … These are cold-blooded animals.Ornithorhynchus is oviparous mammal. D) The Ornithorhynchidae are one of the two extant families in the order Monotremata, and contain the platypus and its extinct relatives. Chemistry. Class 8. Different types of teeth are present in the jaw. (f) Oviparous animal with mammary gland is Ornithorhynchus (duck-billed platypes). Oviparous is a zoological term that refers to animals that lay eggs which then hatch externally. Vitellogenin (Vtg) derivatives are the main egg-yolk proteins in most oviparous animal species, and are, therefore, key players in reproduction and embryo development. Common Examples:- Oviparous - Ornithorhynchus (Platypus); Viviparous - Macropus (Kangaroo), Pteropus (Flying fox), Camelus (Camel), Macaca(Monkey), Rattus (Rat), Canis (Dog), Felis (Cat), Elephas (Elephant), Equus (Horse), Delphinus (Common dolphin), Balaenoptera (Blue whale), Panthera tigris (Tiger), Panthera leo (Lion). Kangaroo . The skin of mammals is unique in possessing hair. B) ... Ornithorhynchus is a [BHU 1986] A) A fossil bird done clear. Figure: Some mammals: (a) Ornithorhynchus (b) Macropus (c) Pteropus (d) Balaenoptera. NEET. The platypus is a monotreme and is oviparous, not viviparous. 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