Phylogenetic tree

• Kingdom: Animalia

• Phylum/division: Chordata,Subphylum,Vertebrate

• Class: Reptiles

Characteristics

• Cold blooded vertebrates• Dry skin (allows them to move around long periods of

time without water)• they lay eggs (eggs tough enough to survive on land) • Can survive on land and in water • Have scaly skin• Some have shells (turtles, tortes)• Come of them have camouflage abilities

Reptiles are split up into 4 groups which are:1. Turtles2. Squamata3. Crocodilians 4. Tuataras• The first reptiles are believed to have evolved

around 320 million years ago.• The most venomous snake in the world is a

Sea Snake

Olive Ridley Turtle

• Kingdom: Animalia • Phylum: Vertebrata • Class: Reptilia • Order: Testudines• Family: Cheloniidae • Genus: Lepidochelys• Species: Olivacea

Leopard Gecko

• Kingdom: Animalia • Phylum: Chordata• Class: Reptilia• Order: Squmata• Family: Eublepharidae• Genus: Eublepharis • Species: E. macularius

Western Diamond Rattlesnake

• Kingdom: Animalia • Phylum: Chordata• Class: Reptilia• Order: Squamata• Family: Viperidae• Genus: Crotalus• Species: C. atirox

Life cycle of a crocodile

How a snake gets its food

• Locomotion: slither

• Food getting: They use their Jacobson's organ to locate food by “smell” or their belly scales to find the food using their prays movements, they form an “s” shape with their bodies and stikes its meal and injects venom, this makes the small creature more manageable for the snake

How do lizards transport substances

• They have a 3 chambered heart • the interventricular septum is is not fully complete but

serves to channel deoxygenated blood to the pulmonary trunk and oxygenated blood to the circulation.

• the flow of blood is directed between the sponge-like arranged muscle bundles which form the major part of the ventricle (Each of the two main chambers of the heart, left and right.)

How do snakes exchange gases?

• Snakes have a small opening just behind the tongue called the glottis, which opens into the windpipe.

• The glottis is always closed, forming a vertical slit, unless the snake takes a breath.

• Snakes are able to extend their glottis out the side of their mouth while they eat, which allows for respiration while they consume large prey items.

How do turtles digest food?

• Have a smaller digestive system

• turtles swallow their food with very little chewing

• The salivary glands of the turtle help to soften and break down the food to make swallowing possible

How do alligators execrate wastes

• They execrate waste as we do

• Almost all reptiles lay shelled eggs• They breath air• Reptiles are covered in scales or have

shells• Almost all reptiles are cold blooded • The first reptiles are believed to have

evolved around 320 million years ago • Their brains apart from their bodies are

relatively smaller then reptiles.

Change in classification

• Amphibians used to be clumped into reptiles group until they were classified as amphibians.

Diagrams

• http://www.sciencekids.co.nz/sciencefacts/animals/reptile.html

• http://en.wikipedia.org/wiki/Reptile

The end