NEET Biology question

In Spirogyra,

(A)Filaments in which lateral conjugation occur are homothallicCorrect
(B)Filaments in which scalariform conjugation occur are homothallic
(C)Filaments in which lateral conjugation occur are heterothallic
(D)A sexual reproduction occurs by zoospores

Answer: (A)

Solution

Lateral conjugation in Spirogyra takes place between two adjacent cells of the same filament, which requires the filament to be homothallic (bisexual/self-fertile), whereas

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Question ID VK-085646