Pond Life

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Pond Life
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Protozoan

• animal-like single celled organisms with a
  nucleus.
• are often classified according to their
  locomotion pseudopods, flagella, or cilia

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Amoebae Ciliated Protozoa

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• Powermedia.com

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Algae - are plantlike organisms that make food by
photosynthesis.

• There are over 40,000 species!
• Most species of algae live in the sea, in lakes,
  or in ponds. Some single-celled green algae live
  in moist conditions on land, such as on tree
  trunks, on the surface of the soil, or on damp
  brickwork. Others live inside lichens.

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Flagella

• A flagellum is a whip-like structure used for
  locomotion.

This small flagellated Peranema has a long
flagellum that only moves at the front end almost
like a propellor.
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• If you remove the gut from a termite and puncture
  it you will find the gut is crammed with the
  weirdest looking protists. This variety has many
  long flagella.
• These protists help the termite to digest wood.
  The actual digestion of the wood is done by
  bacteria living inside the protists.
• The images were made with a 40X objective. The
  protists are less than a tenth of a millimeter!!

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Pseudopodia

• False feet used for movement and are also used
  to capture prey

An Amoeba moves with pseudopods and engulfs its
prey.
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Cilia

• Small hair like extensions used for locomotion
  and for feeding.

Euplotes (left) and Stylonychia (right)