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Land Soil Water Natural Vegetation and Wildlife Resources Test - 9

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Land Soil Water Natural Vegetation and Wildlife Resources Test - 9
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Weekly Quiz Competition
  • Question 1
    1 / -0
    The _________ is the fourth component of the earth.
    Solution
    The biosphere is the layer of the planet Earth where life exists. This layer ranges from heights of up to ten kilometres above sea level. It is the fourth component of the earth. Biosphere is a life-supporting global ecosystem, where each living things depends on each other and the environment. The biosphere extends over the Earth's surface in a thin layer from a few kilometers into the atmosphere, in very cold environments, to the deep-sea vents of the ocean depths, in very hot environments.
  • Question 2
    1 / -0
    Water is a _______.
    Solution

    Water is naturally present, as we know, whether in the form of glaciers or sea and underground water. The most effective use of water by harnessing its energy is to generate hydropower. Water is considered sustainable as well as providing the least solid waste during energy production compared to other resources that are used to generate energy and electricity.

    The correct answer is A .

  • Question 3
    1 / -0
    Which one of the following crops is the most effective in controlling soil erosion?
    Solution

    Strip cropping is a method or farming in which more than one variety of crops are grown in different strips.

    One of the important crop that is usually grown along with other crops is gram. This is because it has good soil holding capacity and prevents soil erosion.

  • Question 4
    1 / -0
    The removal of top soil by water or wind is called ___________.
    Solution
    Soil erosion is the displacement of the upper layer of soil; it is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice, snow, air, plants, animals, and humans.
    The correct answer is B.
  • Question 5
    1 / -0
    Which one of the following is not an agent of soil erosion?
    Solution

     

    Soil Erosion is the action of exogenous processes that strip soil and rock from one location on the crust of the Earth and then transport it to another location where it is deposited (such as water flow or wind).

    The correct answer is D .

  • Question 6
    1 / -0
    A deficiency in ______ for successive years result in serious water shortages. 
    Solution
    India's water needs are fulfilled by monsoon rainfall and continuous deficiency which results in a water shortage.
    Winter rainfall happens only in some parts of the country, and continuous deficiency can lead to irregular cropping patterns but does not cause serious water shortage.
  • Question 7
    1 / -0
    In India which irrigation sources have the maximum area?
    Solution
    Sources of irrigation in India includes a network of major and minor canals from Indian rivers, groundwater well based systems, tanks, and other rainwater harvesting projects for agricultural activities. Irrigation in India helps improve food security, reduce dependence on monsoons, improve agricultural productivity and create rural job opportunities. India’s total area under irrigation is 64.7 million hectares. Of this maximum 45% is shared by tube wells followed by Canals and wells. So, in India wells and tubewells has the maximum area.
  • Question 8
    1 / -0
    Water table is lowered when __________ activity increases
    Solution
    Hunting is a threat to wild animals. It will decrease the population of wild animals. Overfishing is a threat to the marine population, which in turn, affects marine biodiversity. 

    Mining activity requires a huge amount of water, which will decrease the water table in the area. And also due to careless and reckless mining, leaching of minerals into ground water leads to water pollution, making the area's water unfit for human usage. This further causes water shortage.

    Hence, option A is correct.
  • Question 9
    1 / -0
    In Tamil Nadu soil erosion by ___________ is very common in Kambam valley.
    Solution
    Soil erosion means the removal of the top layer of the soil, which makes the soil infertile.
    soil erosion can happen by various agents like running water, glaciers, tides, winds, etc.
    In areas around Kamban valley, soil erosion is a very serious problem here the soil erosion is caused by the coastal winds on the eastern side of the western ghats.
  • Question 10
    1 / -0
    "It is the study of the interaction of the living organisms with the physical, chemical and biological environment". The study is known as _____.
    Solution
    Ecology is the study of how organisms interact with one another and with their physical enviroment. The distribution and abundance of organisms on Earth is shaped by both biotic, living-organism-related, and abiotic, nonliving or physical factors. An example of Ecology is studying the food chain in a westlands area. 
    The correct option is D.
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