The main characteristics of Cryptophyceae are:
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They are found equally in marine and fresh water.
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The cell contains the pigments chlorophyll a, chlorophyll c and phycobiliprotein are located within the lumen of thylakoids.
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The cell body is asymmetric with dorsi-ventral sides.
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Two anteriorly directed flagellum is present which perform different functions.
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Presence of pyrenoids as reserve food materials.