how do mushrooms use sunlight as compared to green plants?
Mushrooms do not contain chlorophyll. they are a fungus, and are in a completely different kingdom than plants. They feed on dead plant matter like decaying trees. Most fungi grow under ground or where it is very dark. Some extend chutes above ground, or into the open air, but this is not to gather sunlight. It is to spread their spore for reproduction. You can find out more at the link below. I hope this helps. Sources: http://www.americanmushroom.org/workbook.
