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Biodiversity and Conservation Test - 14

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Biodiversity and Conservation Test - 14
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  • Question 1
    1 / -0
    All of the following are included in 'Ex-situ conservation' except
    Solution
    Botanical gardens, wildlife sanctuaries and the seed banks are the types of conservation methods which are away from the natural habitats. They are inclusive in the ex-situ type of conservation. Sacred grooves are in-situ type of biodiversity conservation in which some of the plants which have cultural values are protected and preserved. 
    Thus, the correct answer is option D. 
  • Question 2
    1 / -0
    According to Robert May, the global species diversity is about
    Solution
    According to Robert May, global species diversity is about 7 million.
    So, the correct answer is '7 million'.
  • Question 3
    1 / -0
    Which of the following National Parks is home to the famous musk deer or Hangul? 
    Solution
    (A) Correct option (B)
    (B) Explanation of correct answer:
    • The Kashmir Stag is another name for the Hangul deer.
    •  It gets its name from the Dachigam National Park in Jammu & Kashmir. 
    • Dachigam National Park is located in the western Himalayas at elevations ranging from 5500 to 14000 feet above sea level.
  • Question 4
    1 / -0
    Which one of the following is related to Ex-situ conversation of threatened animals and plants?
    Solution
    Ex-situ conservation is the preservation of threatened animals and plants outside their natural habitats. The animals are placed under special care by removing them from their natural habitat. Hence it is also called offsite conservation. For example- Botanical gardens, Wildlife Safari parks, etc. 
    Thus, the correct answer is option B.,
  • Question 5
    1 / -0
    Which of the following has highest diversity in India?
    Solution
    A single species might show high diversity at the genetic level over its distributional range. India has more than $$50,000$$ genetically different strains of rice, and $$1,000$$ varieties of mango.
  • Question 6
    1 / -0
    One of the ex-situ conversation methods for endangered species is
    Solution
    Ex-situ conservation is the method of selecting plants or animals in places outside their natural homes,e.g. cryopreservation, tissue culture etc. They are the sources of genetic material for breeders and genetic engineering. Cryopreservation is a process where cells, whole tissues, or any other substances susceptible to damage caused by chemical reactivity or time are preserved by cooling at -196$$^o$$C under liquid nitrogen.
    Therefore, the correct answer is option C.
  • Question 7
    1 / -0
    Genetic diversity in agricultural crops is threatened by
    Solution
    Genetic diversity refers to the total number of genetic characteristics in the genetic makeup of a species. It is distinguished from genetic variability, which describes the tendency of genetic characteristics to vary. Crop diversity is the variance in genetic and phenotypic characteristics of plants used in agriculture. Crops may vary in seed size, branching pattern, in height, flower color, fruiting time, or flavor. They may also vary in less obvious characteristics such as their response to heat, cold or drought, or their ability to resist specific diseases and pests. It is possible to discover variation in almost every conceivable trait, including nutritional qualities, preparation and cooking techniques, and of course how a crop tastes. And if a trait cannot be found in the crop itself, it can often be found in a wild relative of the crop; a plant that has similar species that have not been farmed or used in agriculture, but exist in the wild. Diversity in a crop can also result from different growing conditions: a crop growing in nutrient poor soil is likely to be shorter than a crop growing in more fertile soil. In addition, and perhaps most importantly, diversity of a harvested plant can be the result of genetic differences: a crop may have genes conferring early maturity or disease resistance. Genetic diversity in agricultural crops is mostly threatened by introduction of high yielding varieties.
    So, the correct answer is 'Introduction of high yielding varieties'
  • Question 8
    1 / -0
    Beta diversity is diversity
    Solution
    • The term beta diversity was introduced by R.H. Whittaker in 1960. He defined it as “the extent of change in community composition or difference in species composition in different sites either local or entire landscape". 
    • Therefore, beta diversity is the diversity operating between communities. Beta diversity is the connecting link between regional and local diversity. It shows the difference in species among the sites.

    So, the correct answer is option B.
  • Question 9
    1 / -0
    Different varieties of Indian mangoes are most popular in Western and some other European countries. The varieties with different flavour, colour, sugar and fleshy counter is due to
    Solution
    Genetic diversity is defined as the total number of genetic characteristics in the genetic makeup of a species. It is distinguished from genetic variability, which describes the tendency of genetic characteristics to vary.
  • Question 10
    1 / -0
    Which one of the following pairs of geographical areas show maximum biodiversity in our country?
    Solution
    The Eastern Himalayan region includes Bhutan, north-eastern India and southern, central and eastern Nepal. It has 163 threatened species like Asian elephant (Elephas maximus), the greater one-horned rhinoceros (Rhinoceros unicornis), the wild water buffalo (Bubalus bubalis) and its largest carnivore, the tiger (Panthera tigris), as well as several birds like storks and hornbills. The Western Ghats are amongst the world's biodiversity hotspots with the large number of endemic species.
    Therefore, the correct answer is option C.
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