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Chapter 4- The Organization of Life

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Chapter 4- The Organization of Life I. Ecosystems: Everything is Connected Defining an Ecosystem 1. An ecosystem is all of the organisms living in an area together ... – PowerPoint PPT presentation

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Title: Chapter 4- The Organization of Life


1
Chapter 4- The Organization of Life
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I. Ecosystems Everything is Connected
  • Defining an Ecosystem
  • 1. An ecosystem is all of the organisms living
    in an area together with their physical
    environment.

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Fresh water ecosystem

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  • 2. Things move from one ecosystem into another.
  • 3. There are no boundaries.

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  • The Components of an Ecosystem
  • 1. An ecosystem is made up of both living and
    non living things.
  • 2. Biotic factors are the living and once
    living parts of an ecosystem, including all
    plants and animals.

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  • 3. Abiotic factors are the nonliving parts of an
    ecosystem.
  • 4. Include air, water, rocks, sand, light and
    temperature.

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  • Scientists organize living things into levels.
  • 6. An organism is an individual living thing.
  • 7. A species is a group of organisms that can
    mate to produce fertile offspring.

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  • 8. A population is all the members of the same
    species that live in the same place at the same
    time.
  • 9. Every population is part of a community, a
    group of various species that live in the same
    place and interact with each other.

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ORGANISM
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SPECIES
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POPULATIONS
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COMMUNITY
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  • Habitat
  • 1. The place an organism lives is called its
    habitat.
  • 2. Organisms tend to be very well suited to
    their natural habitats.

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II. Evolution
  • Evolution by Natural Selection
  • 1. Darwin used the term natural selection to
    describe the survival and reproduction of
    organsisms with particular traits.

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  • 2. A change in the genetic characteristics of a
    population from one generation to the next is
    called evolution.

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  • 3. Adaptation is an inherited trait that
    increases an organisms chance of survival and
    reproduction in a certain environment.

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  • 4. The process of two species evolving in
    response to long-term interactions with each
    other is called coevolution.

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  • 5. The selective breeding of organisms by humans
    for specific characteristics is called artificial
    selection.

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  • 6. Sometimes humans cause populations of
    organisms to evolve unwanted adaptations.
  • 7. Resistance is the ability of one or more
    organisms to tolerate a particular chemical
    designed to kill it.

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III. The Diversity of Living Things
  • There are six Kingdoms
  • 1. archaebacteria
  • 2. eubacteria
  • 3. fungi
  • 4. protists
  • 5. plants
  • 6. animals

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  • B. Archaebacteria and Eubacteria
  • 1. Archaebacteria are found in extreme places.
  • 2. Eubacteria are common and can be found in
    soil and animal bodies.

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  • C. Fungi
  • 1. A fungus is an organisms whose cells nuclei
    and cell walls and they break down dead and
    decaying matter.

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  • D. Protists
  • 1. Protists are a diverse group of one-celled
    organisms and they many-celled relatives.

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  • E. Plants
  • 1. Gymnosperms are woody plants that produce
    seeds, but their seeds are not enclosed in fruits.

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  • 2. Angiosperms are flowering plants that produce
    seeds in fruit.

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  • F. Animals
  • 1. Animals that lack backbones are invertebrates.

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  • 2. Vertebrates are animals with a backbone.

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THE END
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