Concept:The structure labelled I is the sporangium.
The sporangium is a sac-like reproductive organ of fungi such as Rhizopus (bread mould).
Explanation:The sporangium develops at the tip of the sporangiophore.
Inside it, numerous tiny spores are produced.
When mature, the sporangium bursts and releases these spores into the surrounding air.
Each spore can germinate on a suitable surface and grow into a fresh fungus.
This entire process does not involve the fusion of gametes.
It also does not involve gamete formation.
Bud formation is not seen in this structure.
Hence, the sporangium is associated with asexual reproduction.
Answer:B. asexual reproduction
