what happens to the spirogyra upon mansuration
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Spirogyra reproduces sexually as well as asexually.
Asexually it reproduces by fragmentation; simply put, the vegetative structure or the filament breaks into smaller fragments and the interval art cells undergo mitosis, to grow and produce a longer filament.
Sexual reproduction occurs by conjugation. Based on the number and position of the filaments involved, it could be scalariform or lateral.
In scalariform conjugation, 2 filaments are lined side by side along the length of the filament. A cell from each filament produces a bump which elongates into a tube and fuses with the protuberance from the other cell, this is called conjugal canal. The cytoplasm from the male cell passes through the canal into the female cell followed by fusion of gametes and formation of a zygospore. The parallel filaments with the conjugal canal looks like a ladder hence the name scalariform.
Lateral conjugation takes place in a single filament with adjacent cells forming a conjugation passage. The process of formation of gametes, conjugation tubes and zygospore is the same in both.
Hope this will help you..... ✌
Asexually it reproduces by fragmentation; simply put, the vegetative structure or the filament breaks into smaller fragments and the interval art cells undergo mitosis, to grow and produce a longer filament.
Sexual reproduction occurs by conjugation. Based on the number and position of the filaments involved, it could be scalariform or lateral.
In scalariform conjugation, 2 filaments are lined side by side along the length of the filament. A cell from each filament produces a bump which elongates into a tube and fuses with the protuberance from the other cell, this is called conjugal canal. The cytoplasm from the male cell passes through the canal into the female cell followed by fusion of gametes and formation of a zygospore. The parallel filaments with the conjugal canal looks like a ladder hence the name scalariform.
Lateral conjugation takes place in a single filament with adjacent cells forming a conjugation passage. The process of formation of gametes, conjugation tubes and zygospore is the same in both.
Hope this will help you..... ✌
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