Biolog 32 - Chapter 32: Plant Growth and Development I....

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Chapter 32: Plant Growth and Development I. Plant Development A. Germination is the process of the embryo sporophyte resuming growth B. Growth refers to an increase in size or number of cells C. Development is the dividing, lengthening or widening II. Plant Hormones A. Gibberellins are the young tissues of shoots, seeds, and roots B. Auxins are produced at apical meristems of roots and shoots C. Cytokinins are synthesized by animal cells and signal cells to start dividing rapidly D. Ethylene can help with shipment to apply to ripen fruit quickly E. Abscisic acid (ABA) induces stock to enter dormancy before shipment III. Mechanisms of Hormones A. Signal reception leads to signal transduction which leads to cellular response B. Nutrients in endosperm become available for growth when gibberellins are released IV. Direction and Rates of Growth A. Gravitropism is any growth response to earth’s gravitational force B. Statoliths are a cluster of particles that acts as a gravity-sensing mechanism
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Biolog 32 - Chapter 32: Plant Growth and Development I....

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