Chapter 24 Study Questions

Distinguish between acclimation and adaptation to abiotic stress.

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