| NOUN | animal | order Ulvales, Ulvales | an order of protoctist |
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| Meaning | An order of protoctist. | |
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| Synonym | Ulvales | |
| Member of | Chlorophyceae, class Chlorophyceae | algae distinguished chiefly by having flagella and a clear green color, their chlorophyll being masked little if at all by other pigments |
| Members | Ulvaceae, family Ulvaceae, sea-lettuce family | Thin flat or tubular green algae |
| Broader | protoctist order | The order of protoctists |