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Biodiversity and Conservation Test - 80

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Biodiversity and Conservation Test - 80
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Weekly Quiz Competition
  • Question 1
    1 / -0
    One of the chief reasons among the following for the depletion in the number of species making it endangered is
    Solution
    The sudden decrease in the number of species has been observed. The main reason for the decrease includes the activities like hunting and poaching. The animals are killed for skin, teeth, ivory, etc. These activities are performed for the benefits obtained from the animals after killing them, which causes loss of animal species. These activities result in the adding more number of species in the list of endangered animals. 
    Thus, the correct answer is option C. 
  • Question 2
    1 / -0
    Which of the following is associated with evil quartet?
    Solution
    The evil quartet also known as four horsemen of the apocalypse explains the four main human-induced causes of extinction which were habitat degradation, fragmentation, the introduction of exotic species and over-harvesting. Thus, the correct answer is option B.
  • Question 3
    1 / -0
    The objective of Ramsar Convention was 
    Solution
    The objective of Ramsar Convention was Wetland conservation. Its mission was the conservation and wise use of all wetlands through local and national actions and international cooperation to achieve sustainable development throughout the world. Wetland is one of the most diverse ecosystem and its conservation is essential.
    Thus, the correct answer is option C.
  • Question 4
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    Choose the right one which denotes genetic hierarchy.
    Solution
    • The genetic hierarchy includes means a sequential arrangement of genetic material from simple to complex. 
    • Nucleotides are the combination of nitrogenous bases and phosphate which combines to form DNA which is the genetic component of a gene which is the hereditary unit. 
    • The genes form the functional unit of chromosomes. 
    • The chromosomes are the carrier of the hereditary unit from one generation to another in a particular individual. 
    • Several individuals combine to form the population in a particular geographical area. So, the correct answer is option D.
  • Question 5
    1 / -0
    Which is used to select genes from genomic library?
    Solution
    DNA probes are stretches of single-stranded DNA used to detect the presence of complementary nucleotide sequences (target sequences) by hybridization. Genomic library comprises large number of genes in the form of different nucleotide sequences of DNA fragments and they can be selected with the help of DNA probes.
    So, the correct option 'DNA probes'.
  • Question 6
    1 / -0
    Ecological amplitude of a species is related to
  • Question 7
    1 / -0
    A weed, which has invaded many forest lands of India is
    Solution
    Lantana camara  is a noxious weed of South American origin. It was introduced in India as garden ornamental but now it has invaded all tropical and sub tropical areas, mainly forests of India.
    So, the correct answer is 'Lantana camara'.
  • Question 8
    1 / -0

    Which one has become endangered due to extinction of Dodo (Raphus cucullatus)?

    Solution

    Sideroxylon grandiflorum is a long-lived tree in the family Sapotaceae, endemic to Mauritius. It is also known as tambalacoque or dodo tree. It is valued for its timber. Stanley Temple hypothesized that the dodo, which became extinct in the 17th century, ate tambalacoque fruits, and only by passing through the digestive tract of the dodo could the seeds germinate. Thus, due to the extinction of the dodo, the tree has become endangered. So, the correct answer is 'Sideroxylon grandiflorum'.

  • Question 9
    1 / -0
    Population of California Candor is declining due to
    Solution
    The California condor is a New World vulture, the largest North American land bird. It became extinct in the wild in 1987, but the species has since been reintroduced to northern Arizona and southern Utah, the coastal mountains of central and southern California, and northern Baja California. As condors forage exclusively on dead animals, they are especially susceptible to lead exposure from carcasses which are left in the field. Lead poisoning from spent ammunition is the number one cause of death among endangered condors in the wild.
    So, the correct answer is 'Increasing pollution'.
  • Question 10
    1 / -0
    Rate of photosynthesis is maximum at
    Solution
    The rate of photosynthesis would be maximum at the equator because the the rate of photosynthesis depends on the light intensity. Maximum intensity of light occurs at the equator, and gradually decreases with increasing distance from the equator to the south and north poles. So the correct answer is 'Equator'.
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