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Question

Select the incorrect statement regarding reproduction in Rhodophyceae.
  1. Asexual reproduction occurs by non-motile spores.
  2. Sexual reproduction occurs by motile gametes.
  3. Sexual reproduction is oogamous.
  4. Complex post-fertilisation developmental events occur

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

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