Chapter : 6. Reproduction
Fragmentation in Spirogyra
Fragmentation (1. fragmere – to break) :
It is the process of bracking up of the body of an organism into two or more parts called fragments, each of which grows into a new individual. Fragmentation is quite common in algae, fungi, bryophytes and some marine ribbon worms. It is caused by mechanical disturbance, chemicals, death and decay of older parts, emptying of intervening cells, etc. Fragmentation is common method of multiplication in green filamentous alga, Spirogyra (figure). Here all the cells are capable of photosynthesis, growth and division. Therefore, each fragment grows into a new filament.
It is the process of bracking up of the body of an organism into two or more parts called fragments, each of which grows into a new individual. Fragmentation is quite common in algae, fungi, bryophytes and some marine ribbon worms. It is caused by mechanical disturbance, chemicals, death and decay of older parts, emptying of intervening cells, etc. Fragmentation is common method of multiplication in green filamentous alga, Spirogyra (figure). Here all the cells are capable of photosynthesis, growth and division. Therefore, each fragment grows into a new filament.
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