Question

In Rhizopus, tubular thread-like structures bearing sporangia at their tips are called

• A. Filaments
• B. Hyphae
• C. Rhizoids
• D. Roots

Answer 1

The correct option is B

Hyphae

The correct option is B.

Explanation for correct option-

1. Hyphae are the long, branching, thread-like structures found in many fungi like Rhizopus.
2. These are aerial structures on which spore-bearing structures called sporangia are present.

Explanation for incorrect options-

Option A:

The thin filaments present in Rhizopus are called hyphae and not just filaments.

Option C:

Rhizoids are filamentous root-like structures found in bryophytes used for anchorage. These are not found in fungi.

Option D:

1. Roots are underground plant structures found in all vascular plants, not fungi.
2. The main functions of roots are to provide anchorage for the plant and supply water and minerals to the plant.

Final answer: Hyphae are the tubular thread-like structures that bear sporangia at their tips in Rhizopus.