As the Soil Dries Out During a Time of Water

question 65

Multiple Choice

As the soil dries out during a time of water stress, roots send _______, a hormonal signal, to the stomates, which decreases the extent of their opening and thus decreases water loss.

• A) osmotic acid
• B) cyclic AMP
• C) glycerol
• D) abscisic acid

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Definitions:

Survey Study

A research method involving the collection of data from a predetermined population or group by means of a questionnaire or interview.

Manipulates Factors

The adjustment or control of variables or conditions in a study or experiment to examine their effects on an outcome.

Research Method

A systematic approach to collecting data and performing scientific investigations to expand and refine knowledge in a particular field.

Random Sample

A subset of individuals chosen from a larger set, where each member has an equal chance of being selected to represent the whole.