Exam 12: The Plankton, Productivity, and Food Webs

In the dark-light bottle experiment, which one of the following is measured in the clear bottle?

Viral abundance decreases with depth and distance from shore.

Which organisms are members of the holoplankton?

Depending on the time of year, ________ can account for between 10 to 50 percent of net primary production in the open ocean.

Net primary production equals gross primary production minus the respiration requirements of plants or phytoplankton.

The nutrient-poor open ocean tends to support a(n) ________ biological pump compared to coastal and upwelling regions.

In terms of grams of carbon per square meter per day, the open-ocean environment is about as productive as ________.

Harmful algal blooms (HABs) are always associated with toxins.

The total productivity of upwelling areas is greater than the total productivity of open-ocean areas.

Mineral ballasting allows organic-rich fecal pellets to sink faster.

Sargassum belongs to which of the following taxonomic groups?

Satellites can detect ocean color.

Measurements of chlorophyll a fluorescence are made at sea to determine the biomass of ________.

When new marine phytoplankton biomass is produced by photosynthesis, dissolved carbon dioxide is converted to ________.

The most common nutrient that limits coastal productivity is ________.

Nutrients tend to be liberated by decomposition of organic matter at depth and returned to the surface by the physical processes of vertical circulation.

Dinoflagellates are known for ________.

In a simple food chain with 10-percent efficiency, a net primary production rate at the first trophic level is 10,000 units. How many units are available to the fourth trophic level?

All of the following are true plants except ________.

Primary productivity per square meter of ocean surface is, on the average, higher in the neritic zone than in the oceanic zone.