Lichen and Mycorrhizae

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Presentation transcript:

Lichen and Mycorrhizae By Reuben Vandezande

Lichens A fungus that grows symbiotically with algae, resulting in a composite organism that characteristically forms a crust-like or branching growth on rocks or tree trunks.(Wikipedia) http://www.answers.com/topic/lichen

Pictures Tube Lichen

Pictures Green Shield Lichen

Pictures Grisley Beard Lichen

Mycorrhizae Mycorrhizae are symbiotic associations that form between the roots of most plant species and fungi. http://stvrainarborcare.com/FAQs_10.html

Pictures

Pictures White Truffle

Pictures Redwood seedlings with, right, and without, left, mycorrhizae

Importance of Lichen and Mycorrhizae They provide a place for algae to survive in harsh conditions (lichen) They absorb anything in the air, especially pollutants (lichen) Provide nutrients for host plants by increasing the rate of decomposition in the root area of the plant (mycorrhizae)

Life cycle http://kentsimmons.uwinnipeg.ca/16cm05/16labman05/lb2pg20_files/image004.jpg

Interesting Facts Lichens are many times the first organism to settle in an area with no soil It is estimated that lichens cover 8% of the earth Some Lichens may be over 10,00 years old, in the Antarctic Some mycorrhizae can protect roots from other fungus http://itotd.com/articles/637/lichens/