Vertebrates and Invertebrates

• Chordates


  are animals with a notochord
• Notochord


  Is a flexible, rod shaped cartilage found in the embryo of a chordate
• Vertebrates


  Are groups of animals that have a backbone or a spinal column
• Vertebrates are divided into five groups

  fishes, amphibians, reptiles, birds, and mammals.
• Fishes


  Are aquatic beings with fins and tails to help them move around
• Coldblooded animals


  are animals that cannot maintain their body temp
• Jawless fish


  Are the oldest group of fish, they do not have scales or jaws
• Cartilaginous fish


  are fishes that have a cartilage as their skeleton
• Bony fish


  are the biggest group of fishes, and have actual bones as a skeleton and have swim bladder as a ability to keep them floating
• Amphibians


  are groups of animals that can stay at both water and land
• Reptiles 


  are a group of animals that have lungs to breathe, and have dry, scaly skins
• Scales


  They are made of keratin
• Crocodile


  has a V shaped snout
• Alligator


  has a U shaped snout
• Turtles and tortoise


  are the oldest group of reptiles
• Turtles


  Mostly live on water like fresh water turtles live in ponds and lakes
• Tortoise 


  are animals that mostly live on land and are vegetarians
• Warm blooded animals


  are groups of animals that can regulate their internal temp
• Birds


  are animals with feathers and wings, and they are oviparous
• Mammals


  they are classified after a females mammary glands, most animals are viviparous
• Mammary glands 


  are glands that produce milk to feed their young ones
• Primates


  are the highest order of mammals
• Marsupials 


  are "pouched" animals
• Rodents


  are gnawing animals, they have huge incisor teeth to gnaw food, and wood, as well to bite their predetors
• Cetaceans 


  are marine mammals, they breathe air through their blowhole
• Blue whale


  It is the largest whale, is a baleen whale can weigh around 150 tons ( 100,000 kilo)
• Monotremes 


  are egg-laying mammals
• Invertebrates


  are animals that have no backbone or a vertebral column
• Poriferans or sponges


  Are the simplest of all animals