Plant And Animal Adaptation
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Plant And Animal Adaptation

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Plant And Animal Adaptation Plant And Animal Adaptation Presentation Transcript

  • Plant and animal adaptations
    Science 6
    Mrs. Marlene Torres
  • An adaptation is… a change in an organism that help it survive and reproduce in its environment.
    This changes are produce as a response to changes in the environment and occur at cellular level.
    Adaptations
  • Adaptations
    Tropism… is the response of an organism toward or away from a stimulus.
    Remember:
    Stimulus is something that produce a response of an organism.
  • Tropisms in plants
    Phototropism – response toward light
    Hydrotropism – response toward water
    Gravitropism – response to gravity
  • Phototropism
    Plants react to sunlight
    as a response to carry out photosynthesis.
  • Auxins
    This are chemicals that can stimulate parts of a plant, to make it grow quickly or slowly.
  • Phototropism
  • Hydrotropism
    Plants response to
    moisture and look
    for the availability
    of water.
  • Plants response to gravity.
    This response can be either positive or negative.
    Positive Gravitropism -Roots grow down
    Negative Gravitropism –
    Stems grow upward against gravity.
    Gravitropism
  • Other adaptations in plants
    Dessert plants can store water from one rainfall to survive years of drought.
    Carnivorous plants are meat eating plants that have adaptive structures to capture and digest insects.
  • Some plants can produce secretions or oils, like the poison-ivy plant. If you pull it out from the ground may cause a severe rash.
    Thorns are another
    kind of adaptation
    of plants.
    Other adaptations in plants
  • Camouflage
    An appearance that makes something look like its surrounding; could be its shape or color.
    Example:
    Color Camouflage
    -Chameleon
    Shape Camouflage
    -Stick bug
  • Mimicry
    An adaptation in which the animal is protected against predators by its resemblance to another animal.
    It looks like, but it’s not!!
  • Mimicry
    To its shape
    To its color
  • Adaptations to colder climates
    Insulation – refers to a material that does not conduct heat well.
    Examples:
    Birds – feathers
    Whales – blubber
    Some mammals - fur
  • Animals must be able to get rid of excess heat.
    In desserts we can found:
    Fennec – have huge ears that provide a large surface area from which heat can escape.
    Camels – Their humps are made of fat, so they can live off this stored fat when food is scarce.
    *Other animals dig themselves to escape the heat of summer or the cold winter in the dessert.
    Adaptations to Hot Climates
  • The Fennec
  • Animals can respond by instinct or with the help of a learned behavior.
    An instinct… is an inherited behavior that is done automatically.
    An instinct can not be learned.
    Examples: Feed, built nests, attract mates, defend themselves.
    Behaviors and Migration
  • Everything that we done because we learned it, observing or assisted by someone else.
    Examples :
    In humans In other animals:
    Share  Hunting
    Be organize
    Cooperate
    Learned behavior
  • Migration
    Means to move from one place to another.
    Reasons:
    Availability of food
    Changes in climate
    Mating
    Give birth
  • Migration
    Most birds and some insects migrate to warm climates during the fall season.
    At this time of the year the temperature drops and the food available is reduced.