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Chlorophyta – The Green Algae

Chlorophyta – The Green Algae. Unicellular. Colonial. Multi-cellular. Chlamydomonas. Gonium. Ulva – sea lettuce. Complex. Simple. Unicellular. Colonial. Multi-cellular. Cells become more specialized in function

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Chlorophyta – The Green Algae

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  1. Chlorophyta – The Green Algae Unicellular Colonial Multi-cellular Chlamydomonas Gonium Ulva – sea lettuce Complex Simple

  2. Unicellular Colonial Multi-cellular • Cells become more specialized in function • Multi-cellular algae have many different kinds of cells that perform specific functions.

  3. Phaeophyta - Brown Algae • Found in cool shallow • water • -kelp Common brown algae, Fucus

  4. Fucus (Rockweed) Blade Leaf-like -helps with floating -gas-filled Reproductive structures Stipe (like the stem of a plant) Holdfast Holds algae in place

  5. Rhodophyta - Red Algae • Surface water or • Deep waters (depth of 170m) • Most are multicellular • have special pigment thatenable them to trap energycontained in the small amount of light that penetrates • Forms coral reef porphyra Irish moss

  6. Some things we talked about… • How are algae grouped? • What gives them the colour they have? • What is the feature that separates algae from other land plants? • What does it mean for cells to become more specialized?

  7. Reproduction in Algae ~Alternation of Generation~ Characteristic of all members in the plant kingdom Alternate – shifting back and forth

  8. For cells to become more specialized means the cells have developed one specific function and they are responsible for the one function only. They work with other specialized cells to keep an organism alive. • Eg. Eye cells are only for vision and cannot be replaced by muscle cells.

  9. Asexual vs. Sexual Reproduction Alternation of generationmeans shifting back and forth from asexual to sexual reproduction, or fromdiploid to haploid cells

  10. Some Vocab before we start Diploid (2n): normal number of chromosomes Haploid (n): half the normal number of chromosomes For examples: humans 46 chromosomes Diploid (2n) = 46 Haploid (n) = 23

  11. Refer to Reproductive HO

  12. Ecological Role of Algae(Where algae fit into the world?) • Food for ocean life • Provide homes for sea life • Produces oxygen • 50-75% of world’s photosynthesis is done by algae • Rich in vitamins • Used to food processing • Used in modern industries – plastic, paint

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