In which class of algae, gametes are pyriform (pear-shaped) and bear two unequal laterally attached flagella?

Read the following statements :- (A) The vegetative cells have a cellulosic wall usually covered by coating of algin (B) Vegetative reproduction takes place by fragmentation (C) Sexual reproduction may be isogamous, anisogamous or oogamous (D) The gametes are pyriform (Pear shaped) and bear two laterally attached unequal flagella Which algal group represents these characteristics ?

Which bears two unequal flagella?

Which class of algae do they belong to?

Pear shaped gametes with two laterally attached flagella are formed in

Pear shaped gametes with two laterally attached flagella are formed in

In which class of algae, the flagella are totally absent ?

Which of the following statements about Phaeophyceae in incorrect? a. Vegetative reproduction occurs fragmentation. b. Asexual reproduction is by biflagellate pear-shaped zoospores. c. In sexual reproduction, gametes are pyriform and bear 2 laterally attached flagella. d. none of these