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Conservation of Plants and Animals Test - 20

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Conservation of Plants and Animals Test - 20
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  • Question 1
    1 / -0
    Species native to a particular habitat is known as:
    Solution
    Species native to a particular habitat is known as endemic species. Endemic species are plants and animals that exist only in one geographic region. 
    In isolated environments such as the Hawaiian Islands, Australia, and the southern tip of Africa, as many of 90% of naturally occurring species are endemic. 
    So, the correct answer is option A.
  • Question 2
    1 / -0
    The diverse animal species found in their natural surroundings is called as
    Solution
    Fauna is a term which refers to all of the animal life found within a specified region, time period, or both. The plants of the earth produce the oxygen that is breathed by the fauna and in turn, the fauna exhales the carbon dioxide that the flora needs to live. The existence of one species depends upon the existence of the other.
    So, the correct answer is 'Fauna'.
  • Question 3
    1 / -0
    The species of plants and animals which are found exclusively in a particular area are
    Solution
    Endemic species are restricted to a given area for various reasons like some special requirements for optimum growth, soil and other environmental conditions etc. Biodiversity hotspots are the regions with very high levels of species richness and a high degree of endemism. The orange-breasted sunbird (Nectarinia violacea) is exclusively found in fynbos vegetation.
  • Question 4
    1 / -0
    Forest destruction results in:
    Solution

    • Forest destruction or deforestation is the clearing of forests to meet the demands of the human population.
    • The loss of habitat caused by deforestation results in the loss of wildlife. 
    • Deforestation leads to frequent floods and droughts. Over time, the soil loses its fertility and also its water holding capacity. A tree-covered area has a high water-holding capacity, which reduces the risk of flooding during heavy rains. 
    • Trees and their roots provide the soil with an anchor and shelter from the wind and rain. When forests are wiped out, the land becomes exposed, leaving it vulnerable to being washed or blown away by the elements resulting in soil erosion.
    Thus, the correct answer is option D.
  • Question 5
    1 / -0
    Which of the following defines the effect of deforestation on villages? 
    Solution
    Effects of deforestation on villages- Roots of plants hold soil particles together. In the absence of plants, the top layer of the soil will be easily removed by the action of high-speed winds or water flow. Thus, deforestation increases the chances of soil erosion. As a result, soil loses humus and become less fertile. Hence, a fertile land, which is a source of living for farmers in villages, gets converted into a desert.
    Therefore, the correct answer is option D.
  • Question 6
    1 / -0
    Which of the following defines the effect of deforestation on earth?
    Solution
    Effects of deforestation on the Earth:
    As a result of deforestation, chances of desertification, droughts, floods, etc. increase. Deforestation can also increase the level of CO2_2 in the Earth, it will lead to an increase in temperature i.e., global warming. As a result, the entire natural water cycle will get disrupted. This again increases the risk of natural calamities.
    Global Warming is the increase of Earth's average surface temperature due to the effect of greenhouse gases, such as carbon dioxide emissions from burning fossil fuels or from deforestation, which trap heat that would otherwise escape from Earth.
    Hence, the correct answer is option D.
  • Question 7
    1 / -0
    Flora and fauna can be defined as:
    Solution
    Flora is the plant life existing in a particular area. Fauna is the animal life that is present in a particular area. The type of flora and fauna found in a particular region determines the biodiversity of that particular region. The biodiversity in a particular geographical location also depends on abiotic factors like soil, water, air, wind, etc.
    So, the correct answer is option B.
  • Question 8
    1 / -0
    A place where animals are protected in their natural habitat is known as?
    Solution
    A place where animals are protected in their natural habitat is called a sanctuary.
    An animal sanctuary is a facility where animals are protected from any disturbance to them and their habitat.
    Thus the correct answer is option A.
  • Question 9
    1 / -0
    .......... kind of species are found only in a particular area.
    Solution
    Species found only in a particular area are known as endemic. Endemic species are often endangered.
    Pandemic species is one that is widely distributed throughout a country or continent.
    Exotic species are those species that live outside their natural habitat.
    Thus, the correct answer is option A.
  • Question 10
    1 / -0
    Migratory birds fly to far away places because of ........... changes.
    Solution
    • Migratory birds fly to faraway places because of climatic changes. 
    • Bird migration is the regular seasonal movement, often north and south along a flyway for breeding, food availability, habitat, and weather. 
    • For example - Siberian cranes migrate from Russia and Siberia to India in winters.
    • Thus the correct answer is option A. 
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