Q. Which one shows isogamy with non-flagellated gametes?
(a) Ectocarpus
(b) Ulothrix
(c) Spirogyra
(d) Sargassum
Solution :
Correct Option : C Spirogyra is an unbranched filamentous green alga, a freshwater form which forms floating mass. Sexual reproduction in spirogyra is known as conjugation, it involves the fusion of two morphologically identical, but physiological dissimilar gametes. Isogamy involves the fusion of gametes that are morphological and physiological is similar. They are called isogametes and they are non flagellated. They are found in Spirogyra. So, the correct option is ‘Spirogyra’.
