UPSC CSE Prelims
Question 10
Which one of the following is a filter feeder?
View correct answer and explanation
Correct answer: C
Correct Option: C (Oyster)
Explanation: Oysters filter suspended plankton and organic particles from surrounding water using their gills, making them classic filter feeders.
Option-wise Analysis:
A. Incorrect-Catfish mainly feed by active ingestion or bottom foraging; they are not typical filter feeders.
B. Incorrect-Octopuses actively hunt prey with arms and beaks.
C. Correct-oysters draw water through gills and capture suspended food.
D. Incorrect-Pelicans catch fish with their bill rather than filtering microorganisms from water.