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How Living things interact

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How Living things interact Adapting to the Environment All organisms within ecosystems have a special set of characteristics that affect their ability to survive in ... – PowerPoint PPT presentation

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Title: How Living things interact


1
How Living things interact
2
Adapting to the Environment
  • All organisms within ecosystems have a special
    set of characteristics that affect their ability
    to survive in their environment

3
Natural Selection
  • Natural Selection- A characteristic that makes an
    individual better suited to its environment.
    Eventually this trait may become common in that
    species because it is passed from parent to
    offspring.

4
Survival of the Fittest
  • Ever heard of this? Organisms with unique
    characteristics are better suited to survive in
    their environment. They tend to survive. They
    then pass these good traits on to their
    offspring.

5
Adaptations
  • A result of natural selection
  • Adaptations- the behaviors and physical
    characteristics that allow organisms to live
    successfully in their environments.
  • If they do not well suited to survive in their
    environment they will not reproduce as much.
    What will happen to them?

6
What is a Niche?
  • Each organism has a role in an ecosystem based on
    its adaptations to its environment. Each
    organisms role in its habitat is called its
    niche. This involves the type of food they eat,
    how it obtains food, and others that prey on
    this organism. A niche is also the physical
    conditions and how the organism reproduces.

7
Predator Adaptations
  • An adaptation that helps them catch their prey.
    For example a horse shoe bat sends out sound
    waves and located its prey by listening for the
    echo.

8
Prey Adaptations
  • Organisms avoid being eaten by their predators by
    using certain adaptations

9
Preys Defense Strategies
  • Mimicry- disguising their appearance as a
    threatening organism.
  • An example is this caterpillar. Its rear end
    looks like a snake!!

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11
Prey Adaptations
  • Another defense strategy is camouflage
  • Camouflage- when an organisms appearance blends
    in with its typical surroundings

12
Another Defense Strategy
  • Warning color- bright colored animals warn their
    predators that they are poisonous, or just wont
    taste good!

13
Types of Interactions
  • Three types1) Competition- the struggle between
    organisms to survive as they attempt to use the
    same limited resource . If an animal has a
    unique adaptation that reduces competition
    between organisms.

14
The elf owl and the roadrunner both live in the
sanguaro desert and they both eat insects. They
compete for food, but do not occupy exactly the
same niche. While the roadrunner is mostly
active during the day, the owl is active during
the night. If these animals did share exactly
the same niche one of the species would
eventually die off.
15
Types of Interactions
  • 2) Predation- when an organism kills another for
    food

16
Types of Interaction
  • Three types
  • 3) Symbiosis- a close relationship between two
    species that benefit at least one organism

17
Types of Symbiosis
  • Mutualism- A relationship in which both species
    benefit

18
Types of Symbiosis
  • Commensalism- a relationship in which one species
    benefits and the other species is neither helped
    or harmed. (Not as common because most organisms
    affect each other in some way)

19
Types of Symbiosis
  • Parasitism- a relationship where one organism
    benefits and the other is harmed.
  • The parasite benefits, the host is harmed. The
    parasite usually does not kill the organism it
    feeds on because if it does die, the parasite
    loses its source of food/shelter

20
Types of Symbiosis
Moth mites almost always live in just one ear of
a moth. If they lived in both ears the moths
hearing would be so badly affected that it is
likely quickly caught and eaten by a predator,
such as a bat.
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