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Living Environment AIM: How did multicellular organisms evolve? HW #14 read ch 18 Pg 462 Using Dichotomous Keys.

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Presentation on theme: "Living Environment AIM: How did multicellular organisms evolve? HW #14 read ch 18 Pg 462 Using Dichotomous Keys."— Presentation transcript:

1 Living Environment AIM: How did multicellular organisms evolve? HW #14 read ch 18 Pg 462 Using Dichotomous Keys

2 State the functions of the organelles for Paramecium caudatum

3 State the functions of the organelles in the Amoeba

4 Campanella umbellaria (Ciliates)

5 Stentor is one of the largest unicellular organisms

6 The ciliate Coleps feeding on decaying organic matter. x100

7 Straddling the plant and animal kingdoms, the protist Volvox forms stunning bright green colonial balls in water bodies that are enriched in nitrates.

8 Although this organism is very simple the cells have become specialized to carry out specific functions

9 ClassClass

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11 Organisms are classified based on similiarities of structure. AS ONE GOES FROM THE KINGDOM TO THE SPECIES (DOWNWARD IN THE DRAWING), AN INCREASE IN THE SIMILARITY BETWEEN ORGANSIMS OCCURS. THERE ARE FEWER NUMBERS OF DIFFERENT KINDS OF ORGANISMS.

12 Carolus Carolus Laid the foundations for the modern scheme of Taxonomy

13 Grizzly bearBlack bearGiant panda Red fox Abert squirrel Coral snake Sea star KINGDOM Animalia PHYLUM Chordata CLASS Mammalia ORDER Carnivora FAMILY Ursidae GENUS Ursus SPECIES Ursus arctos Section 18-1 Go to Section: Classification of

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15 How was it possible for larger multicellular organisms to evolve from single celled organisms?

16 Stem cells are unspecialized cells

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21 Do now: Work with your groups and draw the Human Digestive System on Chart Paper


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