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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Which auxin is naturally produced within the plant?

Indole-3-acetic acid (IAA)
Gibberellic acid (GA)
Cytokinin
Abscisic acid (ABA)

The correct answer is: Indole-3-acetic acid (IAA)

Indole-3-acetic acid (IAA) is the primary natural auxin produced in plants. Auxins are a class of plant hormones that play a crucial role in various growth phenomena, including cell elongation, apical dominance, and root development. IAA is synthesized mainly in the tips of shoots and roots, which helps in the regulation of growth patterns as the plant responds to environmental stimuli. In contrast, the other options represent different classes of hormones with distinct functions. Gibberellic acid (GA) is primarily involved in promoting stem elongation, seed germination, and flowering. Cytokinins are responsible for promoting cell division and delaying leaf senescence, while abscisic acid (ABA) plays a role in stress responses, particularly in regulating water loss during drought conditions. Each of these hormones has important roles in plant growth and development, but IAA is the specific auxin that is naturally produced and recognized for its direct impact on various growth processes.