Unit 6

Unit 6

Fish
1. How are they
  1. Have scales
  2. Have Fins
  3. Are ectothermic
  4. Lateral line
  5. Breathe through gills
2. Types
  1. Bony fish
  2. Cartilaginous fish
3. Vital functions
  1. Nutrition
    1. Most of them are carnivores but also they are herbivores and omnivores
  2. Reproduction
    1. Sexually
    2. Most of them are oviparous and lay eggs without an impermeable shell
Amphibians
1. How are they
  1. Very thin skin
  2. Four legs
  3. Ectothermic
  4. All adults exhibit cutonaeus respiration
2. Types
  1. Anurans
  2. Urodeles
3. Vital functions
  1. Nutrition
    1. Carnivores
  2. Reproduction
    1. Sexual
    2. Larvae generally become adults through a process of metamorphosis
    3. All of them are oviparous
Reptiles
1. How are they
  1. Thick skin
  2. Scales
  3. Claws
  4. Ectothermic
  5. Breathe through lungs
2. Vital functions
  1. Nutrition
    1. Almost all carnivores
    2. A few are herbivores
  2. Reproduction
    1. Sexually
      1. Almost al of them are oviparous with an impermeable shell
3. Main types
  1. Chelonians
  2. Crocodilians
  3. Squamates
    1. Saurians
    2. Ophidians
Birds
1. How are they
  1. Aerodynamic
  2. Covered with feathers
  3. Wings
  4. Bones are thin but strong and hollow
  5. Beak
  6. Breathe through lungs
  7. Lungs linked to air sacs
2. Vital functions
  1. Nutrition
    1. Some carnivores
    2. Others herbivores
  2. Reproduction
    1. Sexually by laying eggs
    2. Their eggs have an impermeable shell
3. Main types
  1. Carinate birds
  2. Ratites
Mammals
1. How are they
  1. Almost all have hair
  2. Female have mammary glands
  3. Their mouth has lips and different types of teeth
  4. They have four limbs
2. Vital functions
  1. Nutrition
    1. Carnivores
    2. Herbivores
    3. Omnivores
  2. Reproduction
    1. Sexual
      1. A few lay eggs
      2. The majority are viviparous
3. Main types
  1. Monotremes
  2. Marsupials
  3. Placentals

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