JAMB - Biology (1980 - No. 25)
The filament of spirogyra were put into equal volumes of sugar solutions X and Y. After 5 minutes, filaments from solution X had their cells contents rounded up while those from Y were unaffected. The experiment shows that
solution X was stronger than Y
solution Y was stronger than X
Spirogyra used up the sugar in solution X
solution X is good for stimulating sexual reproduction in Spirogyra
solution Y was less contaminated than X
Explicació
Filament of spirogyra shrink in X - hypertonic medium( more concentration than cells interior), Filament of spirogyra unaffected in Y - Isotonic medium( same concentration)
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