Aresearcher is studying the external plates of marine dinoflagellates to improve the taxonomy of these members of the phytoplankton. which microscope would be ideal to study these external features at magnifications between 5000-15000x?

The correct answer is - scanning electron microscope.

Explanation:

SEM or a scanning electron microscope is that produces an image by an electron beam over the sample surface to scan. The electrons of the beam interact with the sample producing various signals that allow providing information about the composition and topography of the individual sample. The magnification of the SEM is in between 20X to 30000X  

Thus, the correct answer is - scanning electron microscope.

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