Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

7th Grade Ch. 4 Sec. 3 Mammals

4,412 views

Published on

Published in: Education, Technology, Business
  • Be the first to comment

7th Grade Ch. 4 Sec. 3 Mammals

  1. 1. Ch. 4 Sec. 3 YouTube video-Bill Nye Mammals song
  2. 3. Characteristics of mammals
  3. 4. Characteristics of mammals vertebrates
  4. 5. Characteristics of mammals 4-chambered heart
  5. 6. Characteristics of mammals skin covered with fur or hair
  6. 7. adaptations that keep mammals warm ` fat (blubber) fur hair
  7. 8. Characteristics of mammals different shaped teeth
  8. 9. 4 types of teeth incisors canines premolars & molars cut into food stab & tear grind & shred
  9. 10. Diet: Herbivores, Carnivores, and Their Teeth video clip
  10. 11. mammal reproduction Most young develop in mother’s body Young fed w/ milk made in mother’s mammary glands
  11. 12. Mammal Mothers
  12. 14. Introduction to Mammals video clip
  13. 15. Characteristics of Mammals endothermic vertebrate
  14. 16. How mammals breathe <ul><li>thru. lungs </li></ul><ul><li>breathe in & out b/c of rib muscles & </li></ul><ul><li>diaphragm = </li></ul><ul><li>large muscle located @ bottom of chest </li></ul>
  15. 19. 3 groups of mammals monotremes marsupials placental mammals classified into groups based on how young develop
  16. 20. 1. MONOTREMES   <ul><li>lay eggs </li></ul><ul><li>3 kinds : </li></ul><ul><ul><li>duck-billed platypus </li></ul></ul><ul><ul><li>2 species of echidna (&quot;spiny anteaters“) </li></ul></ul>
  17. 21. DUCK - BILLED PLATYPUS newborn platypuses nursing from their mother platypus egg                     
  18. 22. Video clip-Duck Billed Platypus
  19. 23. 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
  20. 24. 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.
  21. 25. Both the duck-billed platypus and the spiny anteater are native to Australia.
  22. 26. BrainPOP-Monotremes
  23. 27. 2. MARSUPIALS <ul><li>give live birth but @ an early stage of development </li></ul><ul><li>develop in pouch </li></ul><ul><li>short gestation period </li></ul>
  24. 29. <ul><li>The only marsupial from North America: </li></ul>“ Playing possum”
  25. 31. Female opossums may give birth to 21 young at a time.
  26. 32. This opossum is not pregnant. She is carrying 9 infants in her pouch.
  27. 33. Opossums can grasp branches with their long tails.
  28. 34. Marsupials develop in their mother’s pouch.
  29. 35. <ul><li>A female kangaroo gives birth to only one baby, called a joey, at a time. </li></ul>
  30. 36. One Week Jelly bean size 8 Weeks Man's little finger size Ten Weeks Palm size 6 Months 800 grams KOALA LIFE CYCLE
  31. 37. 3. PLACENTAL MAMMALS <ul><li>develop inside mother’s body until body systems can function independently </li></ul><ul><li>classified into groups based on how: </li></ul><ul><li>they eat </li></ul><ul><li>their bodies move </li></ul><ul><li>examples : </li></ul><ul><li>humans </li></ul><ul><li>bats </li></ul><ul><li>cows </li></ul>
  32. 38. placenta <ul><li>organ in pregnant female mammals that passes materials between mother & embryo </li></ul>umbilical cord
  33. 39. gestation period <ul><li>length of time between fertilization & birth </li></ul><ul><li>the larger the animal  </li></ul><ul><li>the longer the gestation </li></ul><ul><li>period </li></ul>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!
  34. 40. Mammal Gestation Period
  35. 41. Placental mammals Insect-eaters Toothless mammals Mammals with trunks Star-nosed mole Hooved mammals
  36. 44. (rodents)
  37. 45. rodents
  38. 46. <ul><li>Bats are the only mammals truly able to fly. </li></ul>Bats are the only mammals that can fly.
  39. 47. primates <ul><li>large brains </li></ul><ul><li>opposable thumbs- thumb can touch other 4 fingers </li></ul>
  40. 48. <ul><li>It’s question time !!! </li></ul>What have you learned?
  41. 49. Characteristics of Mammals endothermic vertebrate
  42. 50. diaphragm large muscle located at bottom of chest that helps a mammal breathe
  43. 51. 1. MONOTREMES   <ul><li>lay eggs </li></ul><ul><li>3 kinds : </li></ul><ul><ul><li>duck-billed platypus </li></ul></ul><ul><ul><li>2 species of echidna (&quot;spiny anteaters“) </li></ul></ul>
  44. 52. 3 adaptations that keep mammals warm fat (blubber) fur hair
  45. 53. 4 types of teeth incisors canines premolars & molars cut into food stab & tear grind & shred
  46. 54. mammal reproduction Internal fertilization Most young develop in mother’s body Young fed with milk produced in mother’s mammary glands
  47. 55. gestation period <ul><li>length of time between fertilization & birth </li></ul><ul><li>the larger the animal  </li></ul><ul><li>the longer the gestation period </li></ul>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!
  48. 56. primates <ul><li>large brains </li></ul><ul><li>opposable thumbs- thumb can touch other 4 fingers </li></ul>
  49. 57. (rodents)
  50. 58. 2. MARSUPIALS <ul><li>give live birth but @ an early stage of development </li></ul><ul><li>develop in pouch </li></ul><ul><li>short gestation period </li></ul>

×