Chapter 22 Study Questions

Chapter 22 Study Questions

  1. Compare and contrast the vacuolar-type and the hypersensitive response-type of programmed cell death (PCD) in plants.

    Textbook Reference: Programmed Cell Death and Autolysis, pp. 668–669

  2. Define autophagy and discuss its role in plant development. How does the TOR protein kinase regulate autophagy?

    Textbook Reference: Programmed Cell Death and Autolysis, pp. 669–671

  3. Describe the three types of leaf senescence. How can one distinguish between the developmental and chronological age of a leaf?

    Textbook Reference: Programmed Cell Death and Autolysis pp. 669–671; The Leaf Senescence Syndrome, p. 673

  4. Discuss the processes involved in chloroplast senescence and chlorophyll catabolism.

    Textbook Reference: The Leaf Senescence Syndrome, pp. 675–676

  5. Discuss the signaling pathways and key regulatory genes involved in leaf senescence.

    Textbook Reference: Leaf Senescence: The Regulatory Network, pp. 678–681

  6. Discuss the roles of various hormones in regulating leaf senescence.

    Textbook Reference: Leaf Senescence: The Regulatory Network, pp. 681–684

  7. What is leaf abscission and how is it regulated by the hormones auxin and ethylene?

    Textbook Reference: Leaf Abscission, pp. 684–686

  8. Compare and contrast the various types of whole plant senescence.

    Textbook Reference: Whole Plant Senescence, pp. 686–687

  9. Discuss the various hypotheses regarding the causes of monocarpic senescence.

    Textbook Reference: Whole Plant Senescence, pp. 688–689

  10. What has been learned about the senescence of trees from measurements of growth in height versus growth in mass?

    Textbook Reference: Whole Plant Senescence, pp. 689–690

Back to top