Typical Heterokont Protists Have Plastids That Were Almost Certainly Acquired

Typical heterokont protists have plastids that were almost certainly acquired through secondary endosymbioses. In addition to this,

A) heterokonts can be both photosynthetic, in the presence of light, and heterotrophic, in the dark.
B) heterokonts have two different kinds of nuclei, the micronucleus, involved in sexual reproduction and the macronucleus, which controls the everyday functions of the cell.
C) heterokont plastids contain a nucleomorph, a remnant of the nucleus of the secondary endosymbiont.
D) most heterokonts have lost their plastid and reverted to heterotrophy.
E) heterokonts have two flagella, an anteriorly directed, hairy or tinsel flagellum and a posteriorly directed, whiplash or smooth flagellum.

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