Plants Often Use Changes in Day Length (Photoperiod) to Trigger

question 23

Multiple Choice

Plants often use changes in day length (photoperiod) to trigger events such as dormancy and flowering. It is logical that plants have evolved this mechanism because photoperiod changes ________.

• A) are more predictable than air temperature changes
• B) predict moisture availability
• C) are modified by soil temperature changes
• D) can reset the biological clock

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Definitions:

Ions

Atoms or molecules possessing a net electric charge resulting from the addition or removal of one or more electrons.

Electrons

Negatively charged particles located in the orbits around an atom's nucleus.

Stored Energy

Energy that is kept in a system and can potentially be used, such as chemical energy in food or batteries.

Energy Waves

Oscillations that transfer energy from one place to another, which can manifest in various forms such as light waves, sound waves, and electromagnetic waves.