Spirogyra simply breaks up into pieces upon maturation. These pieces or fragments grow into new individuals. Work out the reasons for this based on what you saw in activity 8.4.
Please find below the solution to the asked query
The activity 8.4 of NCERT is about observing structure of Spirogyra under microscope. As observed, the Spirogyra has a simple structure and is made up of combination of cells joined to form a long filament. They do not posses any tissues and organs. Hence, they can divide by intercalary mitosis to form fragments and these fragments of cell or filament can easily grow and mature into new individuals.
Hence, in simple words Spirogyra does not contain complex body i.e tissues and organs, so can divide cell by cell through fragmentation to produce new individuals.
Hope this information will clear your doubts about the fragmentation.
Regards
The activity 8.4 of NCERT is about observing structure of Spirogyra under microscope. As observed, the Spirogyra has a simple structure and is made up of combination of cells joined to form a long filament. They do not posses any tissues and organs. Hence, they can divide by intercalary mitosis to form fragments and these fragments of cell or filament can easily grow and mature into new individuals.
Hence, in simple words Spirogyra does not contain complex body i.e tissues and organs, so can divide cell by cell through fragmentation to produce new individuals.
Hope this information will clear your doubts about the fragmentation.
Regards