1 / 17

Figure 6.6 (EFB)

Plant adaptations to light. Figure 6.6 (EFB). Figure 6.7 (EFB). Sun Plants more Rubisco less chlorophyll small leaves. Shade plants less Rubisco more chlorophyll large leaves. creosote. arum. Light Attenuation A reduction in light intensity due to absorption, reflection, etc.

rowena
Download Presentation

Figure 6.6 (EFB)

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 adaptations to light Figure 6.6 (EFB)

  2. Figure 6.7 (EFB)

  3. Sun Plants more Rubisco less chlorophyll small leaves Shade plants less Rubisco more chlorophyll large leaves creosote arum

  4. Light Attenuation A reduction in light intensity due to absorption, reflection, etc. Figure 3.3 (EFB)

  5. Light attenuation occurs in aquatic environments as well

  6. Temperature affects leave shape and size Figure 6.11

  7. In response to high temperatures, and • to limit water loss, plant morphology • can vary in having: • serrated or lobed leaves • small hair-like structures • waxy cuticles • small leaves • no leaves

  8. Plants may also be able to acclimitize to seasonal shifts in temperature -- reversible physiological changes to cope with changes in local environment -- acclimate = change induced in laboratory -- acclimitize = change under natural conditions

  9. Abcisic acid (ABA) produced to increase cell membrane permeability Response to photoperiod Response to first frosts

  10. Adaptations to water stress Tap root in phreatophyte Spreading root system at surface

  11. Nutrient limitations and carnivorous plants Pitcher Plants 4 spp. in our area

  12. Venus flytrap: endemic species to Southeast

  13. Adaptations to limitations in gases: CO2 and O2 Hydrophyte with lacunae

  14. Plant categories based on adaptations: Xerophytes: desert plants Mesophytes: temperate plants Halophytes: salty soils Hydrophytes: aquatic environments

More Related