Plant Lecture 3

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    What is phenotypic plasticity in plants?

    The ability to change morphology based on environmental conditions.

    How do plants respond to low light conditions?

    They elongate petioles to capture more light.

    What role does auxin play in plant growth?

    It regulates cell elongation and root development.

    What is the function of jasmonic acid in plants?

    It signals defense responses against herbivores.

    How does the plant signaling pathway typically operate?

    It involves receptors, transducers, and cellular responses.

    What distinguishes plant organogenesis from animal organogenesis?

    Most plant organs form after seed germination.

    What happens during signal transduction in plants?

    Signals are amplified through protein phosphorylation.

    What is the role of calcium as a second messenger?

    It rapidly increases in concentration to trigger cellular responses.

    How do receptor-like kinases function in plants?

    They perceive signals and initiate phosphorylation cascades.

    What is the significance of reactive oxygen species (ROS) in plants?

    They are involved in stress signaling and development.

    What is the role of F-box proteins in plant signaling?

    They target proteins for degradation via ubiquitination.

    How do plants balance growth and defense?

    They adjust growth strategies in response to environmental stress.

    What is the function of abscisic acid (ABA) in plants?

    It regulates stress responses and stomatal closure.

    What is the role of gibberellins in plant development?

    They promote seed germination and stem elongation.

    How do cytokinin and auxin interact in plants?

    They work together to promote cell division and growth.

    What is the mechanism of action for strigolactones?

    They inhibit shoot branching and promote mycorrhizal relationships.

    What is the typical response of plants to pathogen attack?

    Activation of defense genes through signaling pathways.

    How do plants perceive light?

    Through photoreceptors that initiate growth responses.

    What is the role of the MAP kinase cascade in plants?

    It amplifies signals through a series of phosphorylation events.

    How do plants utilize action potentials?

    To initiate rapid responses similar to animal neurons.