Question

Select the incorrect statement regarding reproduction in Rhodophyceae.

• A. Asexual reproduction occurs by non-motile spores.
• B. Sexual reproduction occurs by motile gametes.
• C. Sexual reproduction is oogamous.
• D. Complex post-fertilisation developmental events occur

Answer 1

The correct option is B Sexual reproduction occurs by motile gametes.

• Rhodophyceae are red algae found majorly in the marine environment with a small percentage of freshwater species.
• Asexual reproduction occurs through non-motile spores like monospore, tetraspore, etc.
• Sexual reproduction is an advanced oogamous type where the male gamete, the spermatium is non-motile. It reaches the female reproductive structure the carpogonium and reaches the egg or the oogonium through a structure called the trichogyne.
• Fertilization is facilitated by water currents as none of the gametes are motile. The post-fertilization changes in Rhodophyceae are complex giving rise to triphasic life cycles.

So, the correct answer is option B.