Animal Facts Presentation

By:

Jentrey Waugh

Reptiles

Phylum: Chordata

Class: Reptilia

Chordata: comprises true vertebrates andanimals having a dorsal nervous cord

Reptilia: class of cold-blooded air

breathing vertebrates with completelyossified skeleton and a body usuallycovered with scales or horny plates

There are 4 Living Groups (Orders)

Scientific Name

Characteristics

• adaptive to land

• internal fertilization

• As amniotes, reptile eggs are surrounded by membranes for protection and transport that adapt them to reproduction on dry land. development in a leathery shelled egg.

Characteristics

Endoskeleton: bones, spinal columns with strong skeletal system

•strongest weapon is mouth

•four legs for walking (most, snakes have lost legs)

•5 toes on limbs

•All have backbone (spinal)

Characteristics

Exoskeleton: thick, scaly skin (major diff. between them and amphibians)

•scales- small rigid plate that grows out of an animals skinto provide protection.

•Larger size: cover body parts exposed to physical stress (feet, tail, head)

•Smaller size: around joints for flexibility

•Scales keep moisture inside the body (they can live far from water)

Habitat

They can live almost anywhere because there are so many species (over 7,000) in all sizes.

Found on every continent but Antarctica.

•Freshwater and terrestrial

•Tropics or subtropics•Desert•Forest•Grassland•Swamp•Marsh•Scrubland•Jungle

Kansas Reptile: Ornate Box Turtle

Life Cycle

Reptiles do not have an aquatic larval stage.

Courtship: different ways for males to (woo) femalesdependent upon species.

Fertilization: Sexually- internally

Lay Eggs:Many species bury eggs to protect against other predatorsNatural heat from earth incubates the egg so the animal can develop. Females watch over eggs, nesting

Birth:Reptile hatches from shellBegins to eat and growNo metamorphosis (babies look like mini adults)

Develop into adults ready to procreate

Characteristics• ectothermic, body temperature varies according to

environment

• cold blooded (don’t need to consume much food to maintain a body temp)

• paired metanephric kidneys

• uric acid is the main nitrogenous waste

• Respiration: lungs instead of gills

• 3 (most) or 4 (crocodiles only) chambered heart

• well developed brains and central nervous systems

• developed sense organs especially sight and smell

LizardsSnakesWorm Lizards

Squamata

Jacobson Organ- in the roof of mouth that acts like a nose so they stick out there tongue to smell

Most have slender bodies, long tails, and clawed toes.

Some have no legs

Lizard Diet - insects, small animals,(Komodo dragon can eat deer)

Chameleon eyes can move independently, can see forward and backwards at the same time.

Watch Me

Squamata

Jacobson Organ.

Most have slender bodies, no legs.

Snake Diet: Animals, eggs

Poor Vision, Can’t Hear, Feel vibrations

No teeth, swallow Animal whole. Unhinging Jaw.

Move by sliding on belly (land), waving body back and forth (water)

Some species have fangs: filled with poisonous venom

Snake Feast!

TurtlesTerrapinsTortoises

Testudines

Shell: •Hide in shells to protect from attach•Several boney plates that fit together like a jigsaw puzzle•Camouflage designs (black, brown, and dark green) to blend in with environment

No teeth, strong beaks

Diet- eat plants and animals (snails)

Can see more colors than humans do

Watch Me

Shell Comparisons

Tuataras

Sphenodontia

Nickname: “living fossils”haven’t changed much from ancestors

Hunt at night

Look like lizards, different skeletons

live longer (often more than 70 years)

Diet- (varies for species) leaves, fruits, flowers, insects, frogs, snails,birds, small lizards

Sharp teeth

CrocodilesGavialsCaimansAlligators

Crocodilia

Adapted to live in water and on land

Tail- acts like a paddle

Nostrils and eyes high on head for peaking out of water while hunting

“See-through eye lids”- eye lids cover eyes while under water like goggles

Strong, huge jaws. Lined with sharp teeth for ripping prey apart eat food in large chunks or swallow whole

Diet: fish, frogs, crabs, birds, other reptiles, pigs, deer, cattle, people*

Snouts:

Crocodiles- pointyAlligators/Caimans- rounderGavials- long, narrow

Watch Me

Importance to Humans

Ecosystem:Natural life cycle they eat many species we (humans) find undesirable

Lizards eat insectsSnakes eat rodents

Without the links of the food chain many crops would be left defenseless against smaller, hungry predators like insects and rodents.

Food Source:In many cultures turtles, lizards, snakes, and alligators are common in daily diets

Retiles are a primary source of protein in some developing countries

Over hunting has caused termination of some species

Economy:Reptile skin for leather goods

Shoes, pocketbooks, belts, handbags, boots

Snake skin- similar products

Pets: Some require little care to maintain others can be extensive!

Extinct Species

Bibliography

Bibliography: Arnosky, J. All about turtles. Broadway, New York: Scholastic Press, 2000. Print.  Cheshire, Gerard. Scary Creatures. Lizards. New York: Scholastic Inc., 2008. Print. Mader, S. Biology. 8th edition, McGraw-Hill, New York, N. Y. McCarthy, Colin. Eyewitness Books: Reptile. New York: Dorling Kindersley, 2000. Print. Wearing, Judy. World of Wonder Sea Turtles. New York: Weigl Publishers Inc., 2010.Print. World Book's Animals of the World. Alligators and Other Crocodilians. Chicago: World Book, Inc. A Scott Fetzer Company, 2003. Print. World Book Animal Lives. Reptiles. Chicago: World Book, Inc. A Scott Fetzer Company, 2009. Print. Online:http://animaldiversity.ummz.umich.edu/accounts/Reptilia/ http://www.ehow.com/about_6469520_reptiles-important-humans_.html http://www.hbwbiology.net/taxonomy-reptiles.htm http://www.slideserve.com/maurilio/class-reptilia http://www.wisegeek.com/what-are-amniotes.htm