Dive into stomate transpiration of a Pegonia plant highlighting functions of guard cells and root hairs
Microphotography and animation of stomate function
Encyclopædia Britannica, Inc.
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Encyclopædia Britannica, Inc.NASA's new telescope can capture images 100 times larger than Hubble.Media Editor: Elijah Tan
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Encyclopædia Britannica, Inc.Learn how eccrine glands in the skin secrete sweat through pores in the skin's surface, from which the sweat evaporates, removing heat from the body.
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Encyclopædia Britannica, Inc.Every year, monarch butterflies fly south for winter—sometimes traveling up to 1,800 miles.
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© Massachusetts Institute of Technology (A Britannica Publishing Partner)Learn how rainwater droplets, splashing from leaf to leaf, infect plants with disease.
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Contunico © ZDF Studios GmbH, Mainz; Thumbnail © Citalliance/Dreamstime.comLearn why leaves of deciduous trees change colour in autumn.
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Encyclopædia Britannica, Inc.A discussion of the distinctive features of tulip trees (Liriodendron tulipifera).
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Encyclopædia Britannica, Inc.An overview of a leaf and how its structure affects a plant's internal functions.
