"3B torso model"

Spirogyra is a genus of filamentous green algae with chloroplasts arranged in a helical (spiral) pattern.

Marine. Filamentous; polysiphonious construction. Collected.

Characterized by reddish plastids (rhodoplasts).

This species of freshwater algae is commonly used for research on photosynthesis.

Volvox globator is a species of colonial green algae that forms spherical colonies of cells.

Freshwater. Unicellular; pennate, with bilateral symmetry. Basic culture solution.

Characterized by shells (tests) made of silica, in two parts.

Volvox aureus is a species of colonial green algae that forms spherical colonies of cells.

Freshwater. Filamentous. Homothallic strain. Basic culture solution.

Characterized by green plastids and cell walls composed of cellulose.

These bottom-dwelling bivalved crustaceans are found in nearly every aquatic habitat.

Ward's Science is not endorsed by or affliated with FOSS curriculum in any way.

Freshwater. Colonial; colonies elliptical, made up of 16–32 cells. Basic culture solution.

Characterized by green plastids and cell walls composed of cellulose.

Formalin Preserved

Usually found in freshwater and mosses, this organism has a hard umbrella shaped shell or "test", out of which finger-like pseudopodia project.

Specially Prepared “Real-Life” Combinations
The world is teeming with a wide variety of microlife, making studying samples of pond water complicated especially for the beginning student. To lessen the confusion, WARD’S has prepared different culture mixes that reflect protist combinations that occur in the real world, yet eliminates the hundreds of other life-forms found in a collected sample. Comes with a dichotomous key and either the Working with Algae or the Working with Protozoa manual. Supplied in a single jar.

Our choice of three from the following: Actinosphaerium, Amoeba, Arcella, Centropyxis, and Difflugia.

Members of the Pelomyxa genus look very much like Amoeba. Pelomyxa, however, have many nuclei, whereas Amoeba have only one.

Paramecium bursaria is a ciliate that contains mutualistic algae called Zoochlorella. The algae lives in the cytoplasma of the Paramecium and provides it with food. Paramecium bursaria grows in Dilute Alfalfa Medium (Hay Medium) or Soil Water Medium. Requires light for growth.

Paramecium aurelia is the smallest species of Paramecium we offer. Paramecium aurelia is characterized by cilia, which it uses for locomotion and feeing. Contains a macronucleus and two micronuclei. Grows in Dilute Alfalfa Medium (Hay Medium).