Exam 12: The Plankton, Energy, and Food Webs

Bacteria living in the ocean are

An increase in the chlorophyll a content of a seawater sample with time yields a measurement of

The total primary production of the world's oceans is determined more by the large seaweeds than it is by the single-celled microscopic phytoplankton.

In temperate regions, both winter mixing and summer's increasing solar radiation control primary production.

Productivity in tropical oceans is limited by nutrient availability.

Coccolithophorids and diatoms both use calcium carbonate as part of their external skeletons, or shells.

High Nutrient, low chlorophyll a (HNLC) regions include

Dinoflagellate cell walls are composed of

A high-oxygen content and a low-nutrient content in surface seawater indicate that a population of ______ are present.

Approximately the same amount of primary productivity occurs in the oceans as occurs on land.

The standing stock of a population is equivalent to its biomass.

Bottom-up control of primary productivity refers to control by all of the below except

Net plankton are larger than nannoplankton.

There are no bacteria that are capable of photosynthesis.

The most numerous and greatest biomass of herbivores are

In grams of carbon per square meter per day, the open ocean environment is as productive as a tropical rainforest.

At low latitudes, primary production is controlled more by the seasonality of the sunlight than by the availability of nutrients.

The shorter food chains of coastal and upwelling areas generally are more efficient than longer open-ocean food chains.