Question

how the motile spores of brown algae differ from those of green algae

Answer 1

Explanation:

The main difference between red brown and green algae is that red algae contain chlorophyll a, chlorophyll d, and phycoerythrin, while brown algae contain chlorophyll a, chlorophyll c, and fucoxanthin and green algae contain chlorophyll a, chlorophyll b, and xanthophylls.

Answer 2

Answer:

The members of the brown algae family have a different type of gametes that are biflagellated zoospores. These are pear-shaped and have two unequally attached flagella

The members of the family red algae reproduce asexually by non-motile spores and sexually by non-motile gametes. They do not have a flagellated stage in their life cycle.

So, the correct option is 'no flagellated stages in their life cycles'