Plant Physiology

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Chapter 24 Study Questions

  1. Distinguish between acclimation and adaptation to abiotic stress.

    Textbook Reference: Acclimation and Adaptation, pp. 733–734

  2. Discuss the physiological bases of abiotic stress in relation to drought, salinity, light, temperature, and flooding.

    Textbook Reference: Environmental Factors and Their Biological Impacts on Plants, pp. 734–737

  3. Discuss the roles of Ca2+, reactive oxygen species (ROS), and the MAP Kinase cascade during signaling in response to abiotic stress.

    Textbook Reference: Signaling Pathways Activated in Response to Abiotic Stress, pp. 740–744

  4. Which physiological or developmental changes protect plants against water stress, submergence, oxidative stress, temperature stress (including freezing), and toxicity caused by heavy metal ions?

    Textbook Reference: Developmental and Physiological Mechanisms That Protect Plants against Abiotic Stress, pp. 748–755

  5. Create a labeled diagram that shows the ABA signaling pathway that causes stomatal closure during water stress.

    Textbook Reference: Developmental and Physiological Mechanisms That Protect Plants against Abiotic Stress, pp. 755–757

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