Black truffles are a unique type of fungi that are highly prized by chefs and food enthusiasts throughout the world. Which characteristic is seen in truffles but not in common mushrooms?
lack a reproductive phase
contains hyphae
has spores contained in ascus
has spores contained in basidia

Has spores contained in ascus

Explanation:

That's the main difference between mushrooms and truffles.

i'm thinking (a) to keep sand in place; ////////////

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