Completion Review Sheet #2 Biology 7  ____________________ are photosynthetic, oxygen-producing bacteria, formerly known as blue-green algae.  ____________________ use oxygen for cellular respiration, and cannot grow without it.  ____________________ are anaerobic archaea that use H 2 to reduce CO2, producing methane.  A ____________________ is an organism that must consume organic molecules for both energy and carbon.  A ____________________ is a seaweed body that is plant-like but lacks true roots, stems, and leaves.  A ____________________ is a stem-like structure that supports leaf-like blades.  ____________________ protists, such as Giardia, have modified mitochondria.  ____________________ protists, such as Trypanosoma, have a single, large mitochondrion.  ____________________ tolerate or require highly saline environments.  ____________________ are tiny infectious cells disseminated by apicomplexans.  A ____________________ is a rapidly growing, asexually reproducing fungus.  ____________________ are unicellular fungi that live in liquid or moist habitats.  A ____________________ is a small cluster of hyphae with embedded algae.  A ____________________ is a reproductive appendage that produces sexual spores on the gills of club fungi.  ____________________ are asexual spores formed at the ends of the hyphae of Ascomycetes.