Suppose you accidentally find an old preserved permanent slide without a label. In your effort to identify it, you place the slide under microscope and observe the following features :-

a. Unicellular


b. Well defined nucleus


c. Biflagellate–one flagellum lying longitudinally and the other transversely. What would you identify it as? Can you name the kingdom it belongs to?


The organism will be identified to be a Dinoflagellate given the characteristics.

Dinoflagellates are protists. They are unicellular, motile and planktonic. Some dinoflagellates are photosynthetic.



They have two dissimilar flagella. They are constructed in a different way and move in different ways. One lies longitudinally and the


other transversely in a furrow between the wall plates.


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