The availability of which of the following micronutrients limits the rate of photosynthesis over much of the ocean?
A) Cobalt
B) Iron
C) Selenium
D) Iodine
E) Nitrogen

Question

Quizplus · Accepted Answer

Iron is a limiting nutrient for phytoplankton productivity in many areas of the ocean, including parts of the Southern Ocean, the equatorial Pacific, and the subarctic Pacific. Iron is necessary for the synthesis of chlorophyll and other photosynthetic pigments, and its scarcity in seawater can limit the rate of photosynthesis.

The Availability of Which of the Following Micronutrients Limits the Rate