In which layer of the ocean are you likely to find microscopic plants called phytoplankton?

The Epipelagic Zone (sunlight zone)

Explanation:

The depth of this zone is about 200 meters (656 meters) below the ocean's surface. Phytoplanktons dwell there because sunlight penetrates this zone which facilitates the process of photosynthesis.

Hope this helps!

haploid cells;

when it is at an intermediate population density