Tropical rainforests and English forests' - PowerPoint PPT Presentation

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Tropical rainforests and English forests'

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In deciduous forests a thick bark helps to limit moisture evaporation from the tree's trunk. Since this is not a concern in the high humidity of tropical ... – PowerPoint PPT presentation

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Title: Tropical rainforests and English forests'


1
Tropical rainforests and English forests.
  • By Colette Spaul.

2
Plants.
  • 1. Bark In deciduous forests a thick bark helps
    to limit moisture evaporation from the tree's
    trunk. Since this is not a concern in the high
    humidity of tropical rainforests, most trees have
    a thin, smooth bark. The smoothness of the bark
    may also make it difficult for other plants to
    grow on their surface. 2. Lianas Lianas are
    climbing woody vines that drape rainforest trees.
    They have adapted to life in the rainforest by
    having their roots in the ground and climbing
    high into the tree canopy to reach available
    sunlight.  Many lianas start life in the
    rainforest canopy and send roots down to the
    ground.
  • 3. Drip Tips The leaves of forest trees have
    adapted to cope with exceptionally high rainfall.
    Many tropical rainforest leaves have a drip tip.
    It is thought that these drip tips enable rain
    drops to run off quickly. Plants need to shed
    water to avoid growth of fungus and bacteria in
    the warm, wet tropical rainforest.

3
Canopy.
  • THE CANOPY The canopy is the richest region of
    a rainforest. Countless species usually thought
    of as ground dwellers have adapted to life in the
    canopy, including worms, crabs, frogs, kangaroos,
    anteaters, and porcupines, where they feed on the
    numerous fruits, seeds, and leaves or the
    numerous animals that are attracted these foods.

4
The temperature.
  • In rainforests the temperature is very, very hot,
    where as in deciduas forests, the climate is
    tepid, cool.

5
Thank you for listening.
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