Which group includes organisms that can swim and move independently in the pelagic zone?

Which group includes organisms that can swim and move independently in the pelagic zone?

• A. Nekton
• B. Plankton
• C. Phytoplankton
• D. Picoplankton

Answer: (A)

In the open ocean, whether an organism moves independently depends on its ability to swim. Nekton refers to animals that can swim actively and propel themselves, allowing them to move through the water column despite currents—think fish, squids, and marine mammals. This active swimming is what lets nekton travel, hunt, and migrate across large distances in the pelagic zone. Plankton, including phytoplankton and picoplankton, are largely carried along by currents and have limited ability to move against the flow. They rely on water movement for their position in the ocean and occupy the base of the food web as producers (phytoplankton) or small consumers (other plankton). So, the group that includes organisms capable of swimming independently in the pelagic zone is nekton.

In the open ocean, whether an organism moves independently depends on its ability to swim. Nekton refers to animals that can swim actively and propel themselves, allowing them to move through the water column despite currents—think fish, squids, and marine mammals. This active swimming is what lets nekton travel, hunt, and migrate across large distances in the pelagic zone.

Plankton, including phytoplankton and picoplankton, are largely carried along by currents and have limited ability to move against the flow. They rely on water movement for their position in the ocean and occupy the base of the food web as producers (phytoplankton) or small consumers (other plankton).

So, the group that includes organisms capable of swimming independently in the pelagic zone is nekton.