Which of the following are called 'benthos'?

Which of the following are called ‘benthos’?

[amp_mcq option1=”Microscopic plants which float on the ocean water” option2=”Animals which swim in the water” option3=”Plants and animals which live on the ocean floor” option4=”Plants and animals which float on the ocean water” correct=”option3″]

This question was previously asked in

UPSC Geoscientist – 2022

Download PDF Attempt Online

Benthos (or benthic organisms) are the organisms that live on, in, or near the bottom of a body of water, such as an ocean, lake, or river. This category includes a wide range of organisms, from plants like seagrasses to animals like worms, clams, starfish, crustaceans, and even some fish that live on the bottom.

– Benthos are bottom-dwelling aquatic organisms.
– They live on the substrate of the water body.

Aquatic organisms are typically classified based on their habitat and movement within the water column:
– Plankton: Organisms (plants and animals) that float or drift in the water.
– Nekton: Organisms that can actively swim and move independently of water currents.
– Benthos: Organisms that live attached to, or on or in, the bottom substrate.

More similar MCQ questions for Exam preparation:-