1. Deltas are formed at river mouths where the river slows and deposits silt and sediment, creating a fan- or triangle-shaped landform. These deposits are rich in minerals, making the soil highly fertile. Rivers like Ganga, Godavari, Krishna and Mahanadi form vast deltas on India’s east coast. These deRead more

    Deltas are formed at river mouths where the river slows and deposits silt and sediment, creating a fan- or triangle-shaped landform. These deposits are rich in minerals, making the soil highly fertile. Rivers like Ganga, Godavari, Krishna and Mahanadi form vast deltas on India’s east coast. These deltas support intensive agriculture due to their nutrient-rich soil and ample water supply. They are also home to many species of birds and fish, making them ecologically and economically significant.

     

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  2. India’s two main island groups are: Andaman and Nicobar Islands in the Bay of Bengal – a chain of over 500 volcanic islands with dense forests, unique tribes and coral reefs. Lakshadweep Islands in the Arabian Sea – a coral atoll archipelago consisting of 36 islands, mostly uninhabited. These islandRead more

    India’s two main island groups are:

    1. Andaman and Nicobar Islands in the Bay of Bengal – a chain of over 500 volcanic islands with dense forests, unique tribes and coral reefs.
    2. Lakshadweep Islands in the Arabian Sea – a coral atoll archipelago consisting of 36 islands, mostly uninhabited.
      These islands are important for biodiversity, defense, tourism and marine resources. Their remote locations also give India strategic control over large areas of the surrounding oceans.

     

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  3. The Andaman and Nicobar Islands are located in the Bay of Bengal and have great geographic and historical significance. They consist of volcanic islands with coral reefs, rainforests and unique biodiversity. Historically, the Cellular Jail in Port Blair was used to exile Indian freedom fighters undeRead more

    The Andaman and Nicobar Islands are located in the Bay of Bengal and have great geographic and historical significance. They consist of volcanic islands with coral reefs, rainforests and unique biodiversity. Historically, the Cellular Jail in Port Blair was used to exile Indian freedom fighters under British rule. The islands also hold strategic defense importance due to their proximity to international sea routes. Their rich tribal culture, marine ecosystems and natural beauty add to their uniqueness.

     

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  4. Barren Island, in the Andaman Sea, is the only active volcano in India and South Asia. Located east of the Andaman Islands, it occasionally erupts, emitting lava, ash and smoke. The island is uninhabited due to volcanic activity but is monitored by scientists and geologists. Its presence provides vaRead more

    Barren Island, in the Andaman Sea, is the only active volcano in India and South Asia. Located east of the Andaman Islands, it occasionally erupts, emitting lava, ash and smoke. The island is uninhabited due to volcanic activity but is monitored by scientists and geologists. Its presence provides valuable data on tectonic and volcanic processes in the Indian Ocean. Barren Island’s eruptions highlight India’s geological diversity and offer important insight into Earth’s natural forces.

     

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  5. Coral reefs are vibrant underwater ecosystems built by coral polyps, which secrete calcium carbonate to form reef structures. These reefs support countless marine species and are crucial for biodiversity. In India, prominent coral reef areas include the Lakshadweep Islands andaman and Nicobar IslandRead more

    Coral reefs are vibrant underwater ecosystems built by coral polyps, which secrete calcium carbonate to form reef structures. These reefs support countless marine species and are crucial for biodiversity. In India, prominent coral reef areas include the Lakshadweep Islands andaman and Nicobar Islands and the Gulf of Mannar near Tamil Nadu. Reefs provide coastal protection, fishing resources and tourism opportunities. However, they are fragile and face threats from climate change, pollution and overfishing, requiring conservation efforts.

     

    For more NCERT Solutions for Class 7 Social Science Chapter 1 Geographical Diversity of India Extra Questions & Answer:

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