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Solution


Q.

Which one of the following shows isogamy with non-flagellated gametes             [2014]
1 Sargassum  
2 Ectocarpus  
3 Ulothrix  
4 Spirogyra  

Ans.

(4)

Sexual reproduction in algae takes place through the fusion of two gametes. In Spirogyra, the gametes are similar in size (isogamy) and non-flagellated (non-motile).