PHYSIOGRAPHIC DIVISION OF INDIA
GREAT INDIAN DESERT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of these is NOT TRUE about sand dunes?
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sand dunes are temporary hills of sand
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sand dunes are formed around a barrier
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sand dunes permanently remain at one place
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sand dunes cannot be used as landmark in the desert
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Explanation:
Detailed explanation-1: -No, sand dunes cannot be used as landmarks to give directions in a desert because sand dunes do not remain at one place. The strong winds of the desert keep moving the dunes from one place to another.
Detailed explanation-2: -Dune grasses anchor the dunes with their roots, holding them temporarily in place, while their leaves trap sand promoting dune expansion. Without vegetation, wind and waves regularly change the form and location of dunes. Dunes are not permanent structures.
Detailed explanation-3: -Answer: Sand dunes are temporary hills of sand i.e they are not fixed and are easily displaced by winds. Hence the statement is false.
There is 1 question to complete.