Q: What are the two classifications for organisms living in water?


Read this paragraph and choose the correct option from the provided answers:

Nekton are living things that swim through the water. They may live at any depth, in the photic or aphotic zone. Most nekton are fish, although some are mammals. Fish have fins and streamlined bodies to help them swim. Fish also have gills to take oxygen from the water. Figure below shows examples of nekton.

 Choices:

- arctan and nekton

- arctan and plankton

- scharwenka and plankton

- nekton and plankton


A:
nekton and plankton