The Availability of Soil Nutrients Has a Direct Effect on Primary

question 17

Multiple Choice

The availability of soil nutrients has a direct effect on primary productivity.Which of the following is most correct regarding non-limiting and limiting nutrients?

• A)Only phosphorus acts as a limiting nutrient to global primary productivity.
• B)Adding a limiting nutrient,such as nitrogen,would decrease primary production.
• C)Increases in non-limiting nutrients result in increases in primary productivity.
• D)Nitrogen is the limiting nutrient when considering global primary production.
• E)Phosphorous is the only limiting nutrient in terrestrial primary productivity.

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Definitions:

Modified Branch

A plant structure that has evolved from a basic branch form to serve a different function, such as a cactus spine or a climbing tendril.

Whorl

A pattern in which leaves, petals, or other plant parts are arranged in a circular fashion around a central axis.

Sepals

Sepals are the often green, leaf-like parts of a flower that protect the developing bud.

Flower

Specialized reproductive shoot of a flowering plant (angiosperm).