Solution :(c) ECTOCARPUS and Fucus respectively show haplodiplontic and diplontic LIFE cycle.Concept EnhancerIn Ectocarpus sporic meiosis occursand HAPLOID biflagellate meiozoospores are formed. They germinate to PRODUCE gametophytic thalli. The gametophytes liberate gametes, which fuse to form diploid zygote, which gives rise to a diploid plant.