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Organisms and Populations Test - 17

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Organisms and Populations Test - 17
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  • Question 1
    1 / -0
    The part of the biosphere which contains soil is known as 
    Solution
    • Pedosphere is an outer layer of earth that contains soil.
    • Lithosphere includes the brittle upper portion of the mantle, crust and Mantles are made of rock or ices. 
    • Hydrosphere contains all the waters on the earth's surface, such as lakes and seas.
    • Troposphere is the lowest layer of the atmosphere, closest to the earth's surface. so option A is a correct answer.
  • Question 2
    1 / -0
    A relationship in which both the organisms get benefited is known as
    Solution
    Mutualism is a type of symbiotic relationship where both organisms benefit from the relationship. Some ants and aphids are an example. The ants care for and protect the aphids. In return, the aphids provide the ants with a sweet liquid.
  • Question 3
    1 / -0
    A long term association between two or more organisms is known as
    Solution
    Any intimate or long-term association between two or more species is termed as symbiosis. Mutualism, parasitism and commensalism are three types of symbiotic associations of organisms based on the negative or positive impact of association on the partners. Thus, the correct answer is D.
  • Question 4
    1 / -0
    Sahara desert is defined as a desert because
  • Question 5
    1 / -0
    What type of interaction is shown by a cow grazing in a large pasteur owned by a farmer and  producing milk daily?
  • Question 6
    1 / -0
    A relationship in which one organism benefits at the expense of other is known as
    Solution
    Parasitism is a type of symbiotic relationship where one organism benefits at the expense of the other organism. Tapeworms are an example. Tapeworms get food from the digestive system of their host while the host may suffer from various disorders.
    So, the correct answer is 'Parasitism'
  • Question 7
    1 / -0
    What type of interaction is shown by a tapeworm living in the intestine of host and lacking a digestive system?
  • Question 8
    1 / -0
    In which of the following interactions among the species in an ecosystem is represented as $${+}/{-}$$?
    Solution
    Association of organisms which benefits one of the partners at the expense of other is called as parasitism. Mutualism is association of organisms wherein both are benefitted while predation refers to feeding on other living organisms. Mutualisms is defined as +/+ association as none of the partners is harmed while parasitism and predation are +/- association as parasite and predator are benefitted while host and prey are harmed respectively. Thus, the correct answer is option E.
  • Question 9
    1 / -0
    What type of interaction is shown by a remora fish that attaches itself to the underside of  a shark and feeds on the left over food of the shark?
  • Question 10
    1 / -0
    Which of the following refers to a relationship in which both the members are benefited?
    Solution
    Mutualism is an association of organisms wherein both are benefitted. Commensalism refers to the relationship wherein one organism is benefitted while other remains unaffected. Predation and parasitism are the associations wherein prey and host are harmed respectively. Hibernation is a dormant phase of animals when their metabolic rate is zero to combat the stressful cold climate. Thus, the correct answer is A.
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