Interrupting the Night with a Flash of Light Can Trigger

question 59

Multiple Choice

Interrupting the night with a flash of light can trigger flowering in a long-day plant.Why doesn't introducing a short period of darkness during the day cause a short-day plant to flower?

• A)Sunlight contains enough far-red light to inhibit phytochrome induction of flowering.
• B)A brief dark period is not sufficient to trigger flowering.
• C)Phytochrome is only active in the dark.
• D)The circadian clock is less responsive during the day than at night.
• E)The phytochrome response also requires cool nighttime temperatures.

---

Definitions:

Coercion

The practice of compelling someone to act in a certain way by use of force or threats, often undermining their will or consent.

Order And Stability

The state of being well-organized and functioning in a predictable and steady manner, essential for societal well-being.

Exosystem

A term from Bronfenbrenner's ecological systems theory referring to societal settings that indirectly influence an individual, such as a parent's workplace.

Mesosystem

The mesosystem is a concept in ecology and developmental psychology that refers to the interconnections between the microsystems in a person's life, such as family, school, and neighborhood.