Essay on General Biology Lab

1064 Words Apr 21st, 2016 5 Pages
Keva Harris
25 February 2016
Biology Lab 27-13 Survey of the Kingdom Fungi
Question 1: a. Are hyphae apparent?
Yes
b. Are the cells motile?
Yes
Question 2: a. How many species of mold are on the bread?
Five
b. Is pigment distribution uniformly in each mycelium? If not, where is the pigment concentrated in each mold?
No, because the species is not all one color. Concentrated in the sporangium c. What is the adaptive significance of spores forming on ends of apright filaments rather than closer to the protective substrate?
It can spread and disperse easier.
Question 3: a. Is what structure is the dark pigment of Rhizopus concentrated? zygosporangium b. Is Rhizopus reproducing sexually as well as
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Lichens can inhabit areas in which neither algae or fungi could survive alone. b. Would you expect lichens to grow best in rural or urban environments? Why?
Rural environment, because they are extremely sensitive to air pollution.
Questions for Further Thought and Study 1. Mushrooms often spread from soil in rows or circles commonly called “fairy rings.” How could you explain the shapes of these formations?
Initially a spore (the fungal equivalent of a seed) lands on some suitable ground. It starts to grow underground, pushing out mycelium (fungal threads) in all directions. As the mass of mycelium grows the central part dies off, leaving a disc of mycelium growing at the outer edge. Eventually, when season and weather allow, mushrooms are produced above the mycelium and release spores. Sometimes, several years may go by before mushrooms are seen at a fairy ring. The underground presence of the fungus sometimes causes withering or varying colour or growth of the grass above. 2. What advantages does asexual reproduction have over sexual reproduction?
Asexual reproduction creates a clone of the orgaism and only needs one parrent sexual reproduction obviously needs two, asexual reproducetion is quicker but because they are genetically similar a disesase could wipe out the entire species. 3. Does dominance of the haploid condition in a fungal life cycle offer an adaptive

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