Question

Upper part of sea/aquatic ecosystem contains

• A. Plankton
• B. Nekton
• C. Plankton and nekton
• D. Benthos

Answer 1

The correct option is C Plankton and nekton

A.Plankton - a group of uncellular organisms

B.Nekton - aquatic animals that are able to swim and move independently of water currents.

C.Plankton and nekton - a group of uncellular organisms and quatic animals that are able to swim and move independently of water currents.

D.Benthos - organisms present at the bottom of the water bodies.

So, the correct option is 'Plankton and nekton'.