An organism that belongs to the kingdom Protista

An organism that gets food by eating other organisms or their byproducts and that cannot make organic compounds from inorganic material

An organism that feeds on an organism of another species (the host) and that usually harms the host; the host never benefits from the presence of the parasite

Eukaryotic organisms that convert the sun’s energy into food through photosynthesis but do not have roots, stems, or leaves

Types of algae: red, green, brown

The microscopic, photosynthetic organisms that float near the surface of marine or fresh water

Example: Diatoms

Cilli

tiny hair like structures

Colonies