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