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Unicellular Organisms

Paramecium, a unicellular organism, features distinctive organelles that facilitate its survival. The Oral Groove acts as a crucial feeding structure, serving as a ciliated channel that sweeps food particles into the cell, where they are processed in vacuoles for digestion. Additionally, contractile vacuoles manage water balance by expelling excess water, while the eyespot helps the organism navigate towards or away from light. This overview highlights the essential functions of these organelles, emphasizing the complex biology of Paramecium.

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Unicellular Organisms

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Presentation Transcript

  1. Organelles found only in.... Unicellular Organisms

  2. Oral groove • Paramecium have a permanent organelle which functions in feeding. Oral Groove ----------->

  3. Oral groove • Paramecium have a permanent organelle which functions in feeding. • O.G is a ciliated channel on one side of the cell.

  4. Oral groove • Paramecium have a permanent organelle which functions in feeding. • O.G is a ciliated channel on one side of the cell. • Food is swept into the O.G and cilia move the food inside where a vacuole forms around it so it can be digested.

  5. Oral Groove ----------->

  6. Anal Pores • Where waste is expelled.

  7. Eyespot • Orange granule – usually at the ‘front’ end

  8. Eyespot • Orange granule – usually at the ‘front’ end • Functions in light detection and makes the unicel move towards or away from light.

  9. Contractile Vacuole • Specialised vacuoles which regulate amount of water inside. • When vacuole is full it expels water to the outside of the cell.

  10. Now we are going to play “I have, who has” to see how much you know!

  11. Preparing a slide • http://www.youtube.com/watch?v=GHnndVuaync

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