Auxin Triggers the Acidification of Cell Walls, Which Results in Rapid

question 71

Multiple Choice

Auxin triggers the acidification of cell walls, which results in rapid growth, but also stimulates sustained, long-term cell elongation. What best explains how auxin brings about this dual growth response?

• A) Auxin binds to different receptors in different cells.
• B) Different concentrations of auxin have different effects.
• C) Auxin causes second messengers to activate both proton pumps on the plasma membrane and certain genes within the same cells.
• D) The dual effects are due to two different types of auxins that are produced by different genes.
• E) Other antagonistic hormones modify auxin's effects.

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Definitions:

Resource Defense Polygyny

A mating system where males control access to valuable resources in order to attract and mate with females.

Resources

Resources are materials, goods, or services that organisms utilize for survival, growth, and reproduction, including food, water, and shelter.

Socio-ecological Framework

An analytical approach considering the interactions between social behavior and ecological environment in understanding species' dynamics.

Female Defense Polygyny

A mating system where males guard multiple females to ensure exclusive mating access, often seen in animals with defendable, clustered females.