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Hfesosg

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  • 1. Adaptations B1b 5.5 Why are rhododendrons a problem?
  • 2. Rhododendrons have reached BeddGelert! This beautiful Welsh valley is popular with climbers, walkers and families out for a day in the countryside. (BeddGelert also has Snowdonia’s best ice cream shop!).
  • 3. Rhododendrons are not native plants in the UK but they are particularly well adapted to harvest light for photosynthesis. This makes them very successful - and that’s the problem. Click here to play video
  • 4. By clearing the rhododendrons, the seedlings of the woodland trees get a chance to grow and the natural beauty of the valley can be conserved for generations to come.
  • 5.
    • 1 Rhododendrons are adapted to cope with low light conditions - down to about 4% of a normal sunny day!
    • Rhododendrons are cut down because sheep eat them and the leaves are poisonous.
    • Conservationists never destroy part of the living environment.
    • 4 Photosynthesis produces oxygen.
    • Rhododendrons can smother fully grown trees.
    Mark each of these true or false. Click on answers to see how many you got right.
  • 6.
    • 1 Rhododendrons are adapted to cope with low light conditions - down to about 4% of a normal sunny day!
    • TRUE, this is what makes the rhododendron such a good competitor
    • Rhododendrons are cut down because sheep eat them and the leaves are poisonous.
    • FALSE, the leaves are not particularly poisonous (though the BeddGelert ice cream tastes better!) and sheep don’t really eat them!
    • Conservationists never destroy part of the living environment.
    • FALSE, conservationists often cut back one species to promote a wider range of species overall.
    • 4 Photosynthesis produces oxygen.
    • TRUE, it uses up carbon dioxide and water to make sugar and oxygen.
    • Rhododendrons can smother fully grown trees.
    • FALSE, rhododendrons do damage to growing seedlings by blocking the light they need to grow. Fully grown trees have leaves that are borne above the rhododendron canopy.