[Campbell Biology P.1226] Organisms living in the abyssal zone primarily obtain their food fr... | Practice Question
Organisms living in the abyssal zone primarily obtain their food from which of the following sources?
option_A: Photosynthesis conducted by organisms within the abyssal zone.
option_B: Predation on large nektonic organisms that migrate from surface waters.
option_C: Organic matter (detritus) that "rains" down from the productive surface waters of the photic zone.
option_D: Chemosynthesis by organisms adapted to extreme pressure and lack of light.
Explanation
The text states that a major source of food for many benthic species which include organisms in the abyssal zone is 'detritus, which "rains" down from the productive surface waters of the photic zone.'