A marine photosynthetic protist has stiff cellulose plates and two flagella placed in different orientations. Which addi
The organism is a dinoflagellate. Most dinoflagellates possess one longitudinal flagellum and one transverse flagellum lying in a furrow between the cellulose plates.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Chrysophytes and Dinoflagellates