What is the most productive photosynthetic plankton apart from Cyanobacteria?
a. Dinoflagellates
b. Coccolithophores
c. Diatoms
d. Ciliates
ANS: C
Diatoms are extremely abundant photosynthetic organisms. Their efficiency in photosynthesis has
extensively increased the amount of carbon in the atmosphere. Information can be found in the section
Phytoplankton are Autotrophs
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