Choose the incorrect pair

In Ectocarpus male gamete and female gametes are pyriform equal or unequal in size and biflagellated with flagella on the lateral side. In Prophyra, both male and female gametes are non-flagellated. In Polytricum, the male gamete is biflagellated and female gamete is stationary and non-flagellated. In Ulothrix both gametes involved in fusion are flagellated and morphologically identical.