In Rhizopus, tubular thread-like structures bearing sporangia at their tips are called
(a) filaments
(b) hyphae
(c) rhizoids
(d) roots
Answer: B
Solution: Rhizopus is a saprotrophic fungus which feeds on the dead and decaying matter of living organism. The body of rhizopus is made up of branching mycelia composed of three types of hyphae- rhizoids, stolons and unbranched sporangiophores. Hyphae are the filamentous structures that branch out and spread below the substratum surface like in case of bread.