Bush Beans Grow as Small Bushes Rather Than as Vines

question 29

Multiple Choice

Bush beans grow as small bushes rather than as vines because their internodes are short and they branch close to the apical meristem.Which of the following substances,if applied to a bush bean,might cause it to revert to a vine habit?

• A)abscisic acid
• B)a cytokinin
• C)ethylene
• D)a gibberellin

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Definitions:

Just Noticeable Difference

The smallest difference in stimulation that can reliably be detected by an observer.

Psychokinesis

The supposed ability to move or manipulate objects through mental effort alone, without physical interaction.

Principle of Closure

A concept in Gestalt psychology that describes the mind's tendency to see incomplete figures as complete.

Perceptual Organization

The tendency to integrate perceptual elements into meaningful patterns.