Question

What happens when a spirogyra filament attains considerable length?

Answer 1

Spirogyra develops into fragments upon
maturation.This is an asexual mode of reproduction known as Fragmentation..

Answer 2

When a spirogyra attains a considerable length,or gets matured,These oraganisms break up into smaller fragments. This is a forms of asexual reproduction seen in them called as FRAGMENTATION. Each fragment develops into a new spirogyra species and continue the life cycle.