Diversity of ecosystems

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Diversity of ecosystems
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Taxonomy!

• Just a fancy word
• for the
• classification of living organisms

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A family tree is a form of taxonomy
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Why do we classify living organisms?

• Because theres a lot of living organisms on the
  planet and we need to know what they are, what
  they do, what they eat, etc...
• We need to know this information just in case one
  of these living organisms ever tries an uprising
  against the human race.
• Well...actually the taxonomy of living things
  helps us understand the relationship between
  species.

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Species

• Living organisms that share similar
  characteristics belong to the same species.
• Every species is given a scientific name (usually
  in Latin)
• Before scientists classify a new species they
  must study its anatomy, behaviour, and fossil
  ancestors.

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Living organisms (p.218)
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The plant kingdom (p.219)

• Plants produce their own food
• They cannot move on their own
• Divided into five classes
• - Algae (no roots, stems or leaves/usually live
  in water)
• - Mosses Liverworts (no roots, have stems
  leaves, no channels for sap, live on
  ground/attach to objects)
• - Ferns (no flowers to reproduce, do not
  produce seeds/reproduce via spores)
• - Conifers (no flowers to reproduce, produce
  naked seeds usually inside a cone)
• - Flowering plants (reproduce via flowers,
  produce seeds inside a fruit)
• Ferns, conifers and flowering plants have roots,
  stems and leaves. They have channels for
  conducting sap.

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The animal kingdom (p.222)

• Invertebrates (They have no internal skeleton)
• They do not produce their own food
• They feed on plants or other animals
• They can usually move on their own
• The invertebrate groups consists of some of the
  following
• - Sponges
• - Worms
• - Cnidarians (jellyfish, corals, etc...)
• - Mollusks (snails, slugs, octopuses)
• - Echinoderms (starfish, sea urchins, etc...)
• -Arthropods (spiders, insects, crustaceans)

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The animal kingdom (cont...) p.223

• Vertebrates have an internal skeleton
• They can be cold blooded (body temp changes with
  the temp of the environment)
• - Fish( breath under water), Amphibians (breath
  under/out water), Reptiles (breath only out of
  water)
• Or
• Warm blooded (body stays the same regardless of
  the environment)
• - Birds and Mammals

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In class work!

• P.223
• Questions 1 to 8 (do not write down the
  questions)
• Use full coherent sentences!