Best Answer: Slugs: Slugs have important ecological roles. They help cycle organic matter, which in turns helps to build healthy, rich soil. They also are food for wildlife, including raccoons, possums, garter snakes, toads, turtles, and birds. Snails: Just like slugs, snails help break down organic matter.
Facultative anaerobe. Definition. noun. An organism which is capable of producing energy through aerobic respiration and then switching back to anaerobic respiration depending on the amounts of oxygen and fermentable material in the environment. Supplement.rganisms in the Kingdom Fungi can also be facultative anaerobic, such as yeasts. Word origin: an-from Gk., not, without, + Greek Äero -, from ÄÄr, air. Compare: obligate anaerobe. See also: facultative anaerobe, microaerophile, aerotolerant.
Â© A Dictionary of Biology 2004, originally published by Oxford University Press 2004. facultative anaerobes Organisms, such as certain bacteria, fungi, and some internal parasites of animals, that are able to alter their metabolism to grow in either the presence or absence of oxygen.The best-known facultative anaerobe is Saccharomyces cerevisiae, the yeast used in brewing. See anaerobic respiration. A Dictionary of Biology 2004, originally published by Oxford University Press 2004. facultative anaerobes Organisms, such as certain bacteria, fungi, and some internal parasites of animals, that are able to alter their metabolism to grow in either the presence or absence of oxygen.