FFA Floriculture Practice Test

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Study for the FFA Floriculture Test. Access flashcards and multiple-choice questions for thorough preparation. Each question includes hints and explanations. Prepare to excel in your exam!

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What term describes the phenomenon when a terminal bud inhibits the growth of axillary buds?

Stem elongation
Apical dominance
Root growth
Bud formation

The correct answer is: Apical dominance

The phenomenon when a terminal bud inhibits the growth of axillary buds is referred to as apical dominance. This biological process is primarily regulated by plant hormones, particularly auxins, which are produced in the terminal bud. As these hormones are transported down the stem, they suppress the growth of the lateral or axillary buds, preventing them from developing into branches. This mechanism ensures that the plant focuses its energy on growing taller and stronger by directing resources towards the terminal growth, thereby helping the plant reach light more effectively. In contrast, conditions that reduce the concentration of auxins, such as removing the terminal bud, can stimulate the growth of axillary buds, promoting bushier growth. Understanding apical dominance is crucial for effective pruning and training of plants in horticulture and floriculture practices.