When a Plant Responds to External Stimuli, Such as Light

question 88

Multiple Choice

When a plant responds to external stimuli, such as light, gravity, or touch by directional growth, these responses are referred to as

• A) turgor movements.
• B) sleep movements.
• C) nastic movements.
• D) circadian rhythms.
• E) tropisms.

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Definitions:

Parasympathetic

Pertaining to the division of the autonomic nervous system that conserves energy as it slows the heart rate, increases intestinal and gland activity, and relaxes sphincter muscles.

Sympathetic

Part of the autonomic nervous system that increases the body's readiness for action in stress situations.

Parasympathetic

Part of the autonomic nervous system that conserves energy by slowing the heart rate, increasing intestinal and gland activity.

Physical Activity

Any bodily movement produced by skeletal muscles that require energy expenditure, crucial for maintaining physical health.