FOREST ECOLOGY
FOREST SUCCESSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When a coastal sand dune first forms, it is often dry and unwelcoming to plants. Which addition to a sand dune during its development would allow pioneer species, like grasses, to grow on the dune?
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Larger plants like heather
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Salt spray from the ocean
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Nutrients from rotting seaweed
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Animals, such as small toads and frogs
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Explanation:
Detailed explanation-1: -Long tap roots and leaf glue are adaptations to a harsh environment. Sticky leaves trap sand, which stimulates hair therefore increasing the surface area, which helps retain moisture. Beachbur is the most common plant in the unstable foredunes.
Detailed explanation-2: -Coastal sand dunes form where a beach is big enough to allow the sand to completely dry out between high tides, and where there are onshore winds to blow the dry sand landwards. The sand is then trapped by dune grasses which grow through the accumulating layers of hard, inorganic sand.
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