1 / 6

Plant Form and Function Plant Responses to Internal and External Signals

Plant Form and Function Plant Responses to Internal and External Signals. Plant biology, perhaps the oldest branch of science, is driven by a combination of curiosity and need curiosity about how plants work

naasir
Download Presentation

Plant Form and Function Plant Responses to Internal and External Signals

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Plant Form and FunctionPlant Responses to Internal and External Signals Plant biology, perhaps the oldest branch of science, is driven by a combination of curiosity and need curiosityabout how plants work needto apply this knowledge judiciously to feed, clothe, and house a burgeoning human population.

  2. Tropisms • Growth toward or away from a stimulus • Gravitropism (Gravity) • Phototropism (Light) • Thigmotropism (Touch)

  3. Etiolation • The stems of plants raised in the dark elongate much more rapidly than normal, a phenomenon called etiolation.

  4. CYTOPLASM CELL WALL 3 Response   1 Reception 2 Transduction Activation of cellular responses Relay molecules Receptor Hormone or environmental stimulus Plasma membrane Signal Transduction Pathway

  5. Hormones • Are chemical signals that coordinate the different parts of an organism • Help coordinate growth, development,and responses to stimuli

  6. Photoperiod • The relative lengths of night and day • The environmental stimulus plants use most often to detect the time of year

More Related