A Plant Is Exposed to a Toxin That Blocks ABA

question 27

Multiple Choice

A plant is exposed to a toxin that blocks ABA receptor sites in the plasma membrane.What is the likely consequence of this exposure?

• A)Oxygen deprivation will trigger the release of ethylene, which will in turn suppress root growth.
• B)Gibberellin production will increase, allowing the plant to access more nutrients in the soil.
• C)ABA will enter the cells by an alternative route and normal function will be restored.
• D)The plant will lose excess water through transpiration and suffer dehydration.

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Definitions:

Stress

The physical or emotional tension resulting from demanding circumstances or challenges.

Selye

refers to Hans Selye, a pioneering Hungarian-Canadian endocrinologist known for his research on the stress response.

Helping Profession

Occupations focused on assisting individuals, families, groups, and communities to enhance or restore their capacity for social functioning, and creating societal conditions favorable to this goal.

Burnout

A state of physical, emotional, and mental exhaustion caused by prolonged stress, often seen in helping professions.