Microalgae, or phytoplankton, are tiny plant-like organisms.

These algae, known as phytoplankton, are single-celled protists, plant-like organisms that can form dense, visible patches near the water's surface.

In the marine environment, single-celled, microscopic, plant-like organisms naturally occur in the well-lit surface layer of any body of water.

"Blue-green algae" describes a large and diverse group of simple, plant-like organisms found in salt water and some large fresh water lakes.

In other words, during winter, plant-like organisms are inactive and collect fertiliser, but if the temperature rises to some extent they will use this up in a very short period.

At the base of the ocean food web are single-celled algae and other plant-like organisms known as phytoplankton.

In the ocean, high chlorophyll concentrations are concentrated in areas where tiny, plant-like organisms (phytoplankton) thrive.

These green hues could result from phytoplankton-tiny plant-like marine organisms.

As the star continues to cool, more complex life evolves, until plant-like organisms appear around 1000 BC.

Instead, he finds himself being overcome by a rapidly spreading plant-like organism that begins growing on his body after he touches a glowing green substance within the meteorite.