All of the following statements are correct with the exception of: a. In clear ocean waters, the depth of the photic zone is about 2000 m. b. The base of the photic zone is generally where light is just 1% of the radiation incident on the sea surface. c. The depth of the photic zone depends upon concentration of suspended particles and organic matter. d. The photic zone is the region of the ocean where photosynthesis takes place.