Autotrophs that dwell in dark caves, in wells, or on the ocean floor often depend on which of the following biogeochemical processes?
A) chemosynthesis
B) photosynthesis
C) nutrient leaching
D) nitrogen fixing

Question

Quizplus · Accepted Answer

Autotrophs that dwell in dark caves, wells, or on the ocean floor often depend on chemosynthesis, which is the biogeochemical process of using energy derived from the oxidation of inorganic compounds, such as sulfur, to produce organic molecules. This process does not require sunlight, which is not available in the habitats described, and is the primary way that these organisms produce food. Therefore, choice A is the best answer.

Autotrophs That Dwell in Dark Caves, in Wells, or on the Ocean