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Bio Lab Wksht & HW Questions 82

Bio Lab Wksht & HW Questions 82 - and basidiospores...

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77 Make a longitudinal section of a mushroom ( basidiocarp ) and locate the stipe (stalk), cap , and lamellae (gills). The gills of an immature mushroom are covered for some time by a membranous tissue. This tissue breaks as the basidiocarp increases in size and may remain on the stipe in the form of a distinct scar, or annulus . Sketch your observations in the space to the right. Consult a prepared slide of Coprinus , showing a cross- section through the cap. The cross section is somewhat reminiscent of a spoked wheel. Locate the central region that represents the stipe. Radiating away from the stipe are the gills. Locate the gills and basidia protruding into air spaces between the gills. Golden basidiospores are located above the basidia. Sketch and label a drawing showing the gills, basidia
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Unformatted text preview: and basidiospores. How many spores are normally attached to each basidium? Examine members of the pore fungi on display. This group includes shelf and bracket fungi. Note how the fertile lower region is organized into pores rather than on gills. Basidia line the insides of the pores. Sketch a representative from this group to the right. Can you think of an external morphological feature that would separate the mushrooms and bracket fungi? D-2. Class Gasteromycetes: In this class, basidia and basidiospores are borne in a basidiocarp, rather than on a basidiocarp, as in the Class Hymenomycetes. Representatives include puffballs, earthstars, stinkhorns and birdsnest fungi. Examine demonstration material of various gasteromycetes and sketch some typical members in the space below....
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