In an ecosystem, phytoplankton are _____. in an ecosystem, phytoplankton are _____. producers secondary consumers detritivores tertiary consumers primary consumers
Phytoplankton are the primary producers of their ecosystem, since they are the first organisms to produce energy, which they create from light sources, such as the Sun.
They convert acquired light energy into carbohydrates through the process of photosynthesis. Energy not used by the phytoplankton for maintenance is available as food for the animals that consume it.
