Friday, October 12, 2007

chapter 5 -Critical thinking

An autotrophic protist, such as a diatom or a dinoflagellate, can evolve into a heterotrophic protist (and therefore a protozoan) simply by losing its chloroplasts.Under what conditions might this take place?

-It is when photosynthesis takes place on folded membranes within the bacterial cell rather than in chloroplasts as in algae and plants.

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