Amushroom that you see above ground is actually a
a. fruiting body.
b. spore.
c. hyphae.
d. rhizoid.

A. fruiting body.

Mushroom is an example of a heterotroph. 

Autrophs are the organisms that have the capacity to form their own food from inorganic substances like the carbon dioxide. 
Heterotrophs are the organisms that cannot produce their own food but depends on other animals or plants for their nutritional needs. 

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