Question
How do dinoflagellates differ from euglenoids?
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Answer
| S.No. | Dinoflagellates | Euglenoids |
| 1. | they have a cell wall with stiff cellulosic plates on the outer surface. | They have no cell wall, but pellicle, which gives shape and flexibility to body. |
| 2. | They are mostly found in stagnant water. | They are freshwater forms marine. |
| 3. | They are always photoautophotoautotrophic. | They may be trophic or heterotrophic and predaceous in the absence of sunlight. |
| 4. | They have two flagella, one lies transversely and the other longitudinally. | They have two flagella, both anterior in position but one is very short and one is long. |
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