A) Zygnema
B) Spirogyra
C) Cladophora
D) Oedogonium
Correct Answer: B
Solution :
Spirogyra or water silk is a common green algae round in shallow warm water where it can form extensive floating mats. One can detect the 'silky" quality of the filaments by trying to lift the algae from the water. Abundant growth in spring can result in clogged filters, seepage areas, drainage canals, and coves. Dense mats can deplete oxygen, interfere with fishing, or provide breeding sites for mosquitos,
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