REPRODUCTION
REPRODUCTION IN ORGANISMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Breaking up of filaments into smaller bits
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Division of a cell into many cells
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Division of a cell into two cells
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Formation of a large number of buds
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Detailed explanation-1: -In Spirogyra, reproduction takes place by fragmentation that involves breaking down the filaments into smaller bits.
Detailed explanation-2: -Spirogyra undergoes vegetative, asexual, and sexual reproduction. Vegetative reproduction is by fragmentation. Under favorable conditions, vegetative reproduction is the preferred mode of reproduction. The vegetative filament after fragmentation develops into a new filament.
Detailed explanation-3: -In spirogyra, asexual reproduction takes place by fragmentation, in which the filament breaks into several pieces. Each piece grows as a new individual. The vegetative filament transforms into a new filament following fragmentation.
Detailed explanation-4: -Option D: Both sexual and asexual reproduction occurs in Spirogyra species. However, vegetative or asexual reproduction is the most common mode of reproduction. Asexual reproduction and sexual reproduction both involve fragmentation, which is the most common mode of reproduction. So, option D is incorrect.
Detailed explanation-5: -Asexual reproduction is found in few of the species of Spirogyra. Asexual reproduction is by the formation of azygospores, akinetes or aplanospores.