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6th Grade Ch. 4 Sec. 3 Mammals
 

6th Grade Ch. 4 Sec. 3 Mammals

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    6th Grade Ch. 4 Sec. 3 Mammals 6th Grade Ch. 4 Sec. 3 Mammals Presentation Transcript

    • Ch. 4 Sec. 3 YouTube video-Bill Nye Mammals song
    •  
    • Characteristics of mammals
    • Characteristics of mammals vertebrates
    • Characteristics of mammals 4-chambered heart
    • Characteristics of mammals skin covered with fur or hair
    • adaptations that keep mammals warm ` fat (blubber) fur hair
    • Characteristics of mammals different shaped teeth
    • 4 types of teeth incisors canines premolars & molars cut into food stab & tear grind & shred
    • Diet: Herbivores, Carnivores, and Their Teeth video clip
    • mammal reproduction Most young develop in mother’s body Young fed w/ milk made in mother’s mammary glands
    • Mammal Mothers
    •  
    • Introduction to Mammals video clip
    • Characteristics of Mammals endothermic vertebrate
    • How mammals breathe
      • thru. lungs
      • breathe in & out b/c of rib muscles &
      • diaphragm =
      • large muscle located @ bottom of chest
    •  
    •  
    • 3 groups of mammals monotremes marsupials placental mammals classified into groups based on how young develop
    • 1. MONOTREMES  
      • lay eggs
      • 3 kinds :
        • duck-billed platypus
        • 2 species of echidna ("spiny anteaters“)
    • DUCK - BILLED PLATYPUS newborn platypuses nursing from their mother platypus egg                     
    • Video clip-Duck Billed Platypus
    • ECHIDNA (spiny anteater) Their tongue is very long and sticky and is perfect for catching the hundreds of termites and ants that make up their staple diet. Echidna eggs
    • ECHIDNA (spiny anteater) This monotreme’s tongue is very long and sticky and is perfect for catching the hundreds of termites and ants that make up their staple diet.
    • Both the duck-billed platypus and the spiny anteater are native to Australia.
    • BrainPOP-Monotremes
    • 2. MARSUPIALS
      • give live birth but @ an early stage of development
      • develop in pouch
      • short gestation period
    •  
      • The only marsupial from North America:
      “ Playing possum”
    •  
    • Female opossums may give birth to 21 young at a time.
    • This opossum is not pregnant. She is carrying 9 infants in her pouch.
    • Opossums can grasp branches with their long tails.
    • Marsupials develop in their mother’s pouch.
      • A female kangaroo gives birth to only one baby, called a joey, at a time.
    • One Week Jelly bean size 8 Weeks Man's little finger size Ten Weeks Palm size 6 Months 800 grams KOALA LIFE CYCLE
    • 3. PLACENTAL MAMMALS
      • develop inside mother’s body until body systems can function independently
      • classified into groups based on how:
      • they eat
      • their bodies move
      • examples :
      • humans
      • bats
      • cows
    • placenta
      • organ in pregnant female mammals that passes materials between mother & embryo
      umbilical cord
    • gestation period
      • length of time between fertilization & birth
      • the larger the animal 
      • the longer the gestation
      • period
      The gestation period of the largest land animal, the African elephant, averages about 21 months. A house mouse gives birth after a gestation period of only about 20 days!
    • Mammal Gestation Period
    • Placental mammals Insect-eaters Toothless mammals Mammals with trunks Star-nosed mole Hooved mammals
    •  
    •  
    • (rodents)
    • rodents
      • Bats are the only mammals truly able to fly.
      Bats are the only mammals that can fly.
    • primates
      • large brains
      • opposable thumbs- thumb can touch other 4 fingers
      • It’s question time !!!
      What have you learned?
    • Characteristics of Mammals endothermic vertebrate
    • diaphragm large muscle located at bottom of chest that helps a mammal breathe
    • 1. MONOTREMES  
      • lay eggs
      • 3 kinds :
        • duck-billed platypus
        • 2 species of echidna ("spiny anteaters“)
    • 3 adaptations that keep mammals warm fat (blubber) fur hair
    • 4 types of teeth incisors canines premolars & molars cut into food stab & tear grind & shred
    • mammal reproduction Internal fertilization Most young develop in mother’s body Young fed with milk produced in mother’s mammary glands
    • gestation period
      • length of time between fertilization & birth
      • the larger the animal 
      • the longer the gestation period
      The gestation period of the largest land animal, the African elephant, averages about 21 months. A house mouse gives birth after a gestation period of only about 20 days!
    • primates
      • large brains
      • opposable thumbs- thumb can touch other 4 fingers
    • (rodents)
    • 2. MARSUPIALS
      • give live birth but @ an early stage of development
      • develop in pouch
      • short gestation period