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Mammals

Mammals. Ex : Humans , horses , cows , sloths , lions. Body Temp. & Control : countercurrent heat exchange (endothermic). Covering/means of defense: skin, cryptic coloration, musk(spray of skunk ), fur and hair.

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Mammals

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  1. Mammals

  2. Ex: Humans, horses, cows, sloths, lions

  3. Body Temp. & Control: countercurrent heat exchange (endothermic)

  4. Covering/means of defense: skin, cryptic coloration, musk(spray of skunk), fur and hair

  5. Teeth/special organs on head: ears, retina (eyes), heterodonts (have different teeth such as molars, canines)

  6. Digestive system: oral cavity, pharynx, esophagus, stomach, small intestine, large intestine, carnivores-short digestive tract, herbivores-long digestive tract

  7. Respiration: lungs

  8. Heart: 4 chambered

  9. Reproduction Fertilization: internal Type of birth: viviparous(offspring develop within mother’s body)

  10. Movement: strong bones with a spine enabling mammals to stand or walk, most have feet (terrestrial)

  11. Special Features Well developed brain, females produce milk to feed offspring, sweat glands in skin, endothermic

  12. Big Idea #1: Evolution Mammals are different from other life Mammals are similar to other life hair production of milk internal fertilization young born fully developed highly developed circulatory and respiratory systems larger brain size differences in the size and function of teeth. • endothermic such as birds • Birds and mammals both have closed circulatory systems • Mammals, birds, and reptiles are alike for their internal fertilization and lungs for respiration • Mammals and reptiles both have teeth for digestion. • undergo sexual fertilization • have adaptations that help them conserve and utilize energy to maintain homeostasis • maintain some sort of gene expression and regulation

  13. Big Idea #2: Energy • Adaptations for gathering resources more efficiently: • Hunting in groups • Binocular vision • Cheek pouches • Bone structure (flexible spine) • Echolocation • Thumbs and working with tools • Adaptations to utilize/conserve energy more efficiently: • Blubber and thick fur • Estivation (summer dormancy) and hibernation • Evaporative cooling • Burrowing • Crepuscular lifestyle (active at twilight) • Migration

  14. Big Idea #3: Innate Behavior Baby monkeys and apes (including humans) will grasp things with their feet and/or hands Dog shaking water from wet fur Rooting

  15. Big Idea #3: Learned Behavior Mobility, ability to avoid predators, hunting for food Ex. Lion pouncing on prey

  16. Big Idea #3: Cooperative Behavior Ex. female vampire bats: femalesbreast-feedyoung & are unable to feedthemselves, otherfemaleswillshare the bloodthey have collected

  17. Big Idea #4: Interactions • rely on plants and other animals as sources of food • grazing animals eat grasses and affect plant life • overgrazing reduces the usefulness and biodiversity • feces of mammals carry seeds from plants and therefore help in plants dispersal and diversity • mammal waste also plays a part in nutrient cycling, such as the nitrogen cycle • act as prey and predators, part of food chain

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