Normally algae show a haplontic life cycle. Polysiphonia and Fucus are exceptions to this rule. The correct option depicting their classes and life cycles is

Step-by-step solution

The diplontic life cycle is a cycle in which the diploid sporophyte is the dominant, photosynthetic, independent phase of the plant. The gametophytic phase is represented by the single to the few-celled haploid gametophyte. It is seen in all seed-bearing plants gymnosperms and angiosperms. It is also seen in the brown alga Fucus . Haplo-diplontic life cycle is a cycle in which a dominant, independent, photosynthetic, thalloid, or erect phase is represented by a haploid gametophyte, and it alternates with the short-