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NUTRITIONAL ADAPTATIONS - LICHENS These are combinations of...

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NUTRITIONAL ADAPTATIONS  Fungi may adapt well to environments that do not support growth of bacteria. To compare the  two groups: 1. Fungi usually prefer a pH of about 5, which is too acid for most bacteria 2. Almost all molds are aerobic. Most yeasts are facultative anaerobes. 3. Most fungi are more resistant to high osmotic pressure than bacteria, so they are able to grow  in jellies, fruit juice, salted meats, etc.  4. Fungi can grow on substances with a very low moisture content, much lower than that required  by bacteria (baked goods, for example) 5. Fungi require somewhat less nitrogen than bacteria 6. Fungi can break down complex carbohydrates, such as wood, that most bacteria cannot.
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Unformatted text preview: LICHENS These are combinations of a green alga and a fungus. They are placed in the kingdon Fungi and classified by the fungus part. The relationship between the two is mutualism--both benefit. Lichens can live in areas where neither alga nor fungus alone could survive. Examples are newly exposed soil, rocks, trees, concrete, etc. Their main importance in nature is serving as food for arctic tundra caribou and reindeer. ALGAE Algae are mostly aquatic, although some are found in soil or on trees occasionally. Most algae are found in cool temperate waters, although some are found in Antarctic waters and some in tropical zones....
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