parasitic or saprobic organisms living chiefly in fresh water or moist soil.
a salt or ester of alginic acid
A flagellated single-celled organism of a group that comprises euglena and its relatives.
a single-celled alga that has a cell wall of silica. Many kinds are planktonic, and extensive fossil deposits have been found.
A non-chlorophyll pigment inside the chloroplast of photosynthetic organisms, and help in absorbing other light energy essential during the light reactions of photosynthesis.
A minute, elongated cell that arise from the repeated division of the oocyst during sporogony in certain Apicomplexans
An infection of the small intestine caused by the flagellated protozoan giardia lamblia. It is spread via contaminated food and water and by direct person-to-person contact.
An algal bloom is a relatively rapid increase in the population of (usually) phytoplankton algae in an aquatic system.
The fruiting body bearing the asci, as an apothecium or perithecium.
any of various funguslike organisms belonging to the phylum Myxomycota, of the kingdom Protista (or the plant class Myxomycetes), characterized by a noncellular, multinucleate, creeping somatic phase and a propagative phase in which fruiting bodies are produced bearing spores that are covered by cell walls.
An infectious disease caused by the parasite Trichomonas vaginalis.
A type of silica-rich dirt which is soft, fine-grained, porous, light-coloured, and composed of the fossilized remains of diatoms
Long, slender, threadlike, whiplike extension of certain cells or unicellular organisms used mainly for movement.
A structure in which gametes are produced.
a discoloration of seawater caused by a bloom of toxic red dinoflagellates.
The vegetative body of a plant that is not differentiated into organs such as stems and leaves, for example algae, the gametophytes of many liverworts.
The larger type of nucleus involved in non-reproductive functions (as opposed to the smaller micronucleus), and is a distinctive feature among ciliates since it only occurs in this group.