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Description of Sulcochrysis

Single-celled, naked, free-swimming flagellates; with 2 unequal flagella emerging from anterior end of cell; longer flagellum extending anteriorly, bearing tripartite tubular flagellar hairs (without lateral filaments); shorter flagellum naked, extending posteriorly, lying in a vertical furrow (sulcus) that runs from base of short flagellum to posterior end of cell; with a flagellar swelling near base of short flagellum; transitional helix below the flagellar transition plate; basal bodies situated in anterior depression of the nucleus, rhizoplast absent; two chloroplasts, discoid and yellow-brown, each with a single projecting pyrenoid at central part of chloroplast; eyespot lacking; nucleus anterior in cell, slightly depressed at anterior end; cells mixotrophic, with large food vacuole at posterior end of cell; asexual reproduction by longitudinal division.


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Source: BioPedia

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