What is the name of the phenomenon where the terminal bud suppresses the growth of lateral buds?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the Penn State Master Gardener Exam with comprehensive quizzes, flashcards, and multiple-choice questions. Each question is accompanied by hints and detailed explanations to help you succeed. Get ready to excel in your exam!

Multiple Choice

What is the name of the phenomenon where the terminal bud suppresses the growth of lateral buds?

Explanation:
Apical dominance explains this pattern. The tip of the shoot (the terminal bud) produces the hormone auxin, which travels downward through the stem and suppresses the growth of axillary (lateral) buds. This keeps the plant growing mainly upward rather than branching. If the terminal bud is removed or its signal is reduced, the suppression lifts and lateral buds can grow, making the plant bushier. While auxin is the key player, other hormones like cytokinins and strigolactones modulate how strongly the lateral buds are inhibited.

Apical dominance explains this pattern. The tip of the shoot (the terminal bud) produces the hormone auxin, which travels downward through the stem and suppresses the growth of axillary (lateral) buds. This keeps the plant growing mainly upward rather than branching. If the terminal bud is removed or its signal is reduced, the suppression lifts and lateral buds can grow, making the plant bushier. While auxin is the key player, other hormones like cytokinins and strigolactones modulate how strongly the lateral buds are inhibited.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy