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Biodiversity and Conservation Test - 40

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Biodiversity and Conservation Test - 40
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  • Question 1
    1 / -0
    How many species are believed to exist on Earth at present time?
    Solution
    • The total variability of life forms on planet Earth is measured as global biodiversity which is reported to be between 5 million and 30 million at present scenario.

    So, the correct answer is option D.
  • Question 2
    1 / -0
    If there is a loss of one plant species in an ecosystem, it could lead to
    Solution
    The food chain is a network in which the different organisms in an ecosystem are linked by the transfer of energy. When there is loss of one plant species in an ecosystem, there is direct as well as indirect effect on the other organisms. The organisms like the microbes, insects and herbivores which directly depend on the plants for food will die. The other animals like the carnivores and scavengers will die due to the reduction in the number of animals which were used as food. 
    Thus, the correct answer is option B. 
  • Question 3
    1 / -0
    Which of the following is the main reason for extinction of animals?
    Solution
    Destruction of habitat is the process in which natural habitat is rendered unable to support the species that lived in it. Increasing urbanization and industrialization has resulted in encroachment of forest areas leading to destruction of habitat. As a result, the natural flora and fauna have been endangered and some have become extinct. Thus the correct answer is option C.
  • Question 4
    1 / -0
    The organisation that provides funds for preserving the wildlife in our country is.
    Solution
    WWF also called as World Wide Fund for Nature working in the field of the wilderness preservation, and the reduction of humanity's footprint on the environment. It concentrates on the conservation of three biomes that contain most of the world's biodiversity i.e., oceans and coasts, forests, and freshwater ecosystems. Among other issues, it is also concerned with endangered species, sustainable production of commodities and climate change.
    So, the correct answer is option C.
  • Question 5
    1 / -0
    The Siberian crane from Russia is a regular visitor to the bird sanctuary in which place in India?
    Solution
    In Rajasthan, the Bharat bird sanctuary is very famous. Between the months October to March, migratory birds can be seen there. One of them is crane from Siberia.
    So, option D "Bharatpur sanctuary Rajasthan" is the correct answer.
  • Question 6
    1 / -0
    Different local population of a species is known as 
    Solution
    • Population is a unit of biotic community made of near group of multi breeding individuals of a species found in a geographical area at a particular time. It is called deme.
    • Different populations of a species occupying different geographical areas are called sister populations. 


    Therefore, the correct answer is option B.

  • Question 7
    1 / -0
    A biosphere reserve conserves and preserves
    Solution
    An area which is conserved to protect the biodiversity and culture of that area is known as biosphere reserve. A biosphere reserve is consisted of many protected areas like sanctuaries, national parks, lakes, lands mountains etc. 
  • Question 8
    1 / -0
    Development of botanical garden is what type of conservation
    Solution
    Ex situ conservation means literally, "off-site conservation". It is the process of protecting an endangered species of plant or animal outside of its natural habitat; for eg, by removing part of the population from a threatened habitat and placing it in a new location, which may be a wild area or within the care of humans. While ex situ conservation comprises some of the oldest and best-known conservation methods, it also involves newer, sometimes controversial laboratory methods. Seed band is also an example of ex-situ conservation.
    So, the correct answer is 'Ex-situ'.
  • Question 9
    1 / -0
    Variety of organisms existing on the earth, their interrelationships and their relationship with the environment is called as
    Solution
    Biodiversity is the variation in living organisms from all sources such as terrestrial and aquatic ecosystems. It also involves the interaction of the biotic and abiotic factors with each other. Biodiversity is responsible for maintenance of balance in the ecosystem. Thus the correct answer is option D.
  • Question 10
    1 / -0
    Measure of biodiversity of an area is
    Solution
    Biodiversity is the variety of different types of life found on the Earth and the variations within species. It is a measure of the variety of organisms present in different ecosystems. Hence, the correct answer is option C.
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