An animation shows how water moves in and out of the stomata of a plant leaf, that is, the relationship between the stomata and the humidity in the leaf. (
http://cycas.cornell.edu/ebp/projects/laststraw/ise/anim.3.html
)
Interact with the animation of the opening and closing of stomata to know how stomata work during the day and the night. (
http://academic.kellogg.edu/herbrandsonc/bio111/water.htm#crosssection
)
This site has a number of great animations and videos that illustrate how water and food move around a plant in the xylem and phloem tissues. (
http://academic.kellogg.edu/herbrandsonc/bio111/water.htm#tissuepatterns
)
The parts of a typical flower and their functions are discussed in this animation. (
http://seamonkey.ed.asu.edu/~alex/pub/aect2000b/pages/fpage2.html
)
Many plants respond to changes in time with "sleep movements," such as closing their flowers and changing the position of their leaves at night. Watch these short time-lapse movies on Circadian Responses to see examples of sleep movements. (
http://sunflower.bio.indiana.edu/~rhangart/plantmotion/movements/leafmovements/clocks.html
)
See the dramatic snapping shut of the leaf of a Venus Flytrap when it detects movement on its surface. This movement is known as the nastic response of the Venus Flytrap. (
http://sunflower.bio.indiana.edu/~rhangart/plantmotion/movements/nastic/flytrap/flytrap.h...
)
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