10.'Non-flagellated’ gametes occur in: A. Ulothrix B. Funaria C. Spirogyra D. Selaginella
Option C Isogamy is a form of sexual reproduction that involves gametes of similar morphology (similar shape and size). Isogamy is found in Spirogyra in which both gametes are non-motile. So, the gametes in Spirogyra can't move due to the absence of flagella and is immobile. Hence, 'Non-flagellate' gametes occur in Spirogyra.
