Practice question

MCQ

Question

Which one of the following statements pertaining to global ocean ecosystem productivity is NOT correct?

Options

Choose one · Correct answer highlighted

Higher chlorophyll concentrations and the general higher productivity observed around the equator is driven by the process of upwelling and/or mixing of high nutrient subsurface water into the euphotic zone. In some temperate and subpolar regions, productivity is least during the spring due to the transitioning of phytoplankton from light-limiting to nutrient-limiting conditions. Correct In the nutrient-poor tropical and subtropical ocean, the cyanobacteria tend to be numerically dominant, as they specialize in taking up nutrients at low concentrations. Larger phytoplankton, such as diatoms, oiten dominate the nutrient-rich polar ocean, and these can be grazed directly by multicellular zooplankton.

Explanation

which one of the following statements pertaining operates via In some temperate and subpolar regions, productivity is leas represents established outcome. functional assays validates option B. Other options propose substrate or regulatory direction, inconsistent with published kinetics and mutant phenotypes.

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Practice question

Which one of the following statements pertaining to global ocean ecosystem productivity is NOT correct?

Options

Explanation

Comments

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