What is the mechanism of apical dominance?
Apical Dominance and Auxin Expression

Quiz
•
Biology
•
12th Grade
•
Easy
. Ayunda
Used 6+ times
FREE Resource
16 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
Apical dominance is a result of lateral bud growth stimulation
Apical dominance is controlled by the plant hormone cytokinin
Apical dominance is caused by excessive sunlight exposure
The mechanism of apical dominance is primarily controlled by the plant hormone auxin, which is produced in the terminal bud and transported downwards to inhibit the growth of lateral buds.
2.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
How does auxin affect lateral buds?
Auxin causes lateral buds to change color.
Auxin inhibits the growth of lateral buds.
Auxin has no effect on lateral buds.
Auxin promotes the growth of lateral buds.
3.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
What regulates auxin expression in plants?
Light, gravity, and other hormones
Wind direction, humidity, and nutrients
Temperature, soil pH, and water availability
Time of day, plant age, and leaf color
4.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
Which signaling pathways are involved in apical dominance?
Auxin signaling and strigolactone signaling
Jasmonic acid signaling and Ethylene signaling
Cytokinin signaling and Gibberellin signaling
Brassinosteroid signaling and Abscisic acid signaling
5.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
Explain the role of auxin in suppressing lateral bud growth.
Auxin suppresses lateral bud growth by inhibiting their outgrowth and promoting apical dominance.
Auxin only affects root growth, not lateral bud growth
Auxin has no effect on lateral bud growth
Auxin promotes lateral bud growth by enhancing their outgrowth
6.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
Describe the process of apical dominance in plants.
Apical dominance in plants is controlled by auxin produced in the terminal bud, which suppresses the growth of lateral buds.
Apical dominance is caused by a lack of water reaching the terminal bud.
Apical dominance is a result of excessive sunlight exposure on lateral buds.
Apical dominance is controlled by cytokinins produced in lateral buds.
7.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
How can auxin levels be manipulated to control apical dominance?
Prune the roots to manipulate auxin distribution
Increase auxin levels by removing lateral buds
Apply a growth hormone to decrease auxin levels
Remove the apical bud to reduce auxin levels and promote lateral bud growth.
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