Apical Dominance and Auxin in Plant Growth
Explore the concept of apical dominance in plants and the role of auxin in regulating growth patterns. Experiment designs to manipulate auxin concentrations for testing apical dominance are discussed, emphasizing the importance of lateral bud development. Engage in hands-on activities to understand these fundamental principles in plant biology.
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Presentation Transcript
BIO 162 Apical Dominance Experiment
Auxin and Apical Dominance Apical dominance is a growth pattern restricted to the main stem of the plant, while lateral buds remain dormant. If the apical bud is removed, lateral buds will grow Auxin produced by apical meristem More auxin, less lateral growth
Apical Dominance (a) (a) Apical meristem intact (b) (b) Apical meristem cut off Dormant lateral buds Lateral shoots
Auxin and Apical Dominance Experiment How can we manipulate a plant s auxin concentrations to test for auxin s role in apical dominance? Work in groups of two on experimental design worksheet Class will discuss and come to an agreement on experimental design Set up experiment Leave at least six pages of lab notebook blank for data collection and homework
