Question 7: Write short notes on the following.
(i) The Indian Desert
(ii) The Central Highlands
(iii) The Island groups of India
Answer:
(i) The Indian desert: lies towards the western margins of the aravali hills. It is an undulating sandy plain covered with sand dunes known as barchans. This region receives very low rainfall below about 150 mm per year (15 cm). It contains arid climate with low vegetation canopy. Streams appear during the rainy season. Soon after they disappear into the sand as they don't have enough water to reach the sea. Luni is the only large river in this region.
(ii) The central highlands: lies to the north of the Narmada river. It covers the major part of the malwa plateau. The rivers in this region flows from southwest to northeast that indicates the slope of this region. It is wider in the west and narrower in the east. Bundelkhand and baghelkhand points the eastward extension of this plateau. The plateau further extends from eastwards into the chhotanagpur plateau.
(iii) The island groups of India: India has 2 main island groups, Lakshadweep, Andaman and Nicobar island. The lakshadweeep consists of this group that are formed of coral deposits known as atolls in Malayalam which refer to their ring or horse shoe-shaped. The Andaman and nicobar islands on the other hand are larger in size. They are more in numbers and more widely scattered. There are about 200 islands in the Andaman group and 19 islands in the nicobar group.
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