In the Fall, the Leaves of Some Trees Change Color

question 60

Multiple Choice

In the fall, the leaves of some trees change color. This happens because chlorophyll breaks down and the accessory pigments become visible. What hormone is responsible for this?

• A) phototropin
• B) abscisic acid
• C) cytokinin
• D) ethylene

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Definitions:

Bandura's Fortuitous Events

Refer to events that occur by chance and can have significant impacts on an individual’s life, according to Albert Bandura’s social cognitive theory.

Behavior

The manner in which an individual or entity acts or conducts themselves, especially towards others.

Skinner's Behaviorism

A theory of learning based on the idea that all behaviors are acquired through conditioning, advocated by B.F. Skinner, emphasizing the effects of reinforcement on behavior.

Reinforcers

Stimuli which, when presented after a behavior, increase the likelihood of that behavior being repeated.