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Which one of the following is a filter feeder?

June 1, 2025 by rawan239

Which one of the following is a filter feeder?

Catfish

Octopus

Oyster

Pelican

This question was previously asked in

UPSC IAS – 2021

Download PDF Attempt Online

Option C is the correct answer. Oysters are filter feeders, meaning they obtain nutrition by filtering suspended food particles from water.

A filter feeder is an animal that feeds by straining suspended food particles from water. Examples include bivalve molluscs like clams and oysters, as well as some fish, whales, and birds.

Catfish are generally bottom feeders or predators. Octopuses are predatory cephalopods. Pelicans are birds that typically catch fish directly with their beaks, rather than filtering.

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