IGCSE Biology - classifying animals phylum vertebrates - five classes
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Vertebrates are divided into five classes: fish, amphibians, reptiles, birds, and mammals. Birds are distinguished by their feathers, toothless beaked jaws, egg-laying, and high metabolism. The platypus is a venomous mammal that has a duck-like bill and webbed feet, beaver-like tail, and otter-like body and fur, making it a hodgepodge of other animal features.
IGCSE Biology - classifying animals phylum vertebrates - five classes
- 4. Phylum Vertebrates Vertebrates are animals with backbones. They are divided into 5 groups called classes: Fish, Amphibians, Reptiles, Birds and Mammals.
- 6. Class Fish
- 8. Notes Periophthalmus barbarus - mudskippers in The Gambia Sharks practice internal fertilisation.
- 15. Class Birds, also known as Aves, are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton
- 18. COMMON NAME: Platypus SCIENTIFIC NAME: Ornithorhynchus anatinus TYPE: Mammals DIET: Carnivores SIZE: Head and body, 15 in; tail, 5 in WEIGHT: 3 lbs
- 19. The platypus is among nature's most unlikely animals. In fact, the first scientists to examine a specimen believed they were the victims of a hoax. The animal is best described as a hodgepodge of more familiar species: the duck (bill and webbed feet), beaver (tail), and otter (body and fur). Males are also venomous. They have sharp stingers on the heels of their rear feet and can use them to deliver a strong toxic blow to any foe. https://www.youtube.com/watch?v=QNoQvjlmGdk BBC The life of Mammals David Attenborough https://www.youtube.com/watch?v=2lCKc8tURtc&list=PLD941E65FBD70DB46