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Transcript of Reptiles Prezi
Structures and Functions
Classification of Reptiles
Life Cycle of Reptiles
By: Keegan Simmons
Most reptiles are tetrapods, meaning that they have four limbs.
Reptiles are cold-blooded, meaning that they cannot regulate their internal body temperatures.
Because they are
will have to
it is cold.
In hot weather, reptiles
find shelter to prevent
Reptiles have protective scales on their skin.
(These are what a reptile's scales look like)
Reptiles lay hard-shelled eggs. This means that reptiles are amniotes
Diagram of a Reptile Egg
Some reptiles have additional specialized bones in their jaws that allow for a greater range of motion.
Being cold-blooded, reptiles don't use energy that is usually consumed to regulate body temperature. This reduced energy use helps reptiles survive well in desert climates.
The hard-shelled eggs of reptiles help them by allowing eggs to survive on land, because the hard shell can retain moisture without drying out.
The scales of reptiles protect them from attacks, and serve a second function by reducing the loss of body moisture. This retainment of moisture helps reptiles to survive in dry desert climates.
The Enhanced range of motion in some reptile's jaws help them to eat larger prey.
The earliest reptiles emerged 340 million years ago
Turtles, dating back 200 million years, are among the oldest reptiles alive today.
Reptiles evolved from ancestral amphibians, and could better on land because of their scales and hard shelled eggs.
The common ancestor shared between reptiles and amphibians was a group of reptile-like amphibians called Reptiliomorpha.
Reptiles are part of the domain: Eukarya (Organisms composed of cells with a nucleus)
Reptiles are part of the kingdom: Animalia
Reptiles are part of the phylum: Chordata (They have bilaterally symmetrical bodies)
Reptiles form the class: Reptilia
Reptiles start out in an egg, which is located on land
Reptiles hatch from their eggs, and will remain in their juvenile state until they reach maturity
Once reptiles reach their adult stage ( The time taken to reach maturity varies greatly) they can reproduce, and restart the cycle.
The largest reptile ever was the Argetinosaurus, which was 120 feet from head to tail, and weighed over 100 tons
The smallest reptiles are mini-chameleons, which can be just 1.3 inches from head to tail
Some species of tortoises can live for over 150 years!
Galapagos Giant Tortoise
Jackson, Tom. Animals of the World. London: Lorenz Books, 2008. Print.