少儿英语-蜥蜴.ppt

* 2006-2007 Ryan Invertebrates are animals that have no backbone such as the Protozoa, Annelids, Molluscs, Echinoderms, Crustaceans, Arachnids, and Insects. Vertebrates are animals that have a backbone, such as the Reptiles, Fish, Amphibians, Mammals, and Birds. This is an Alligator. It is a vertebrate and part of the reptile family. This is a Monarch butterfly. It’s an invertebrate and part of the insect family. alligator butterfly In this project I’m going to concentrate on Reptiles and in the group of Reptiles I’m going to concentrate on Lizards. A Lizard is a Reptile. Reptiles are ectoderms. Ectoderms have to bask in the sun to get warm and active and they have to find shade to cool off. Reptiles are a cold blooded animal that has scaly skin to keep them from drying out. Some reptiles just hibernate if it’s going to be cold for a long time. A Lizard is a vertebrate. This is a Komodo Dragon, the largest Lizard alive. The komodo dragon can kill a Water Buffalo which is several times it’s own weight! Komodo dragon There are hundreds of different kinds of Lizards. What makes a Lizard a Lizard? What makes a Lizard a Lizard is it has external ears, eyelids and is a lot smaller than some other Reptiles. One of them is the Komodo Dragon, the Flying Dragons, the Blindworms, the Iguanas, the Chuckwallas, the Skinks and lots lots more. Another type of lizard is the Australian Frilled Lizard shown on the right. The Australian Frilled Lizard protects itself by opening its mouth and making a hissing noise then it opens its frill encircling its head to scare the predator. The frill has rods made of cartilage in it and the rods are attached to the tongue and jaw muscles. They only open their frill when their frightened. Australian Frilled Lizard All of us don’t really know how the Prehistoric Lizards looked like. Thanks to the bones of the Dallasaurus the scientists were able to see how it looked like because of the bones of this mysterious creature. The Prehistoric Lizard i