So what is this stuff?

Filamentous Algae

Oedogonium

Zygnema

Free living algaes

Netrium (algae)

Algae

Cladophora

Perenema

Blepherisma

Protists

Volvox

Paramecium

Volvox / Paramecium

Euglena

Stentor

Amoeba

Stentor / Amoeba

Cyclops (Copapod)Cyclo

ps

Daphnia

Daphnia

CyprisOstracod

Ostracod

Nematode (Round worm)

Nematode

Rotifer

Rotifers

Tardigrade (Water bear)

Tardigrade

Microscope parts and functions

Making the Pond Water Slide• Place one or two

drops with some algae on slide.

• Carefully place coverslip at a 45 degree angle and touch the liquid.

• Lower coverslip until it lies flat.

Using the Microscope• Make sure the low power lens (4x) is clicked

in place. (over the opening in the stage)• With the light on, look through the eyepiece

adjust the diaphragm until you see a bright circle of light.

• Place and fasten the prepared slide to the stage. Center some algae in the stage opening.

• Lower the objective lens so it is at its closest point to the slide. (look from the side)

Using the Microscope (cont.)• Looking through the eyepiece, slowly turn

the coarse adjustment knob, moving the lens away until objects come into focus.

• Move the slide over the stage with knobs or fingers until a specimen of interest is centered.

• Observe specimens as desired. Then switch to medium or high power. Use the fine adjustment knob to adjust the focus.

Pondwater Lab• On a piece of paper make drawings of 2

different organisms you see in a drop of pond water. Identify and label them from the photos.

• Describe if you think each organism is single-celled or multi-celled.

• Label any cell parts you can identify.