Question

In Spirogyra, asexual reproduction takes place by 

विकल्प

• breaking up of filaments into smaller bits

• division of a cell into two cells

• division of a cell into many cells

• formation of young cells from older cells.

Answer 1

breaking up of filaments into smaller bits

Explanation - 

Spirogyra is an multicellular alga with filamentous body. It reproduces asexually through fragmentation in which its filament breaks up into smaller pieces, each of which grows into a new individual.