Gk ques and ans wih detailed explanation

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  1. Consider the following statements related to Indian Rhino Vision 2020. (IRV 2020)
  1. The goal of Indian Rhino Vision is to increase the total rhino population in Assam to 3000 by 2020.
  2. Pobitora National Park has the largest number of one horned rhinos in the world.
  3. Kaziranga National Park has the highest density of Rhinos in the world.
  4. Trans locations of Rhinos from source populations in Kaziranga and pobitora to target areas such as maras.
Which of the given above statement(s) is/ are correct?
  1. 1 and 2 only
  2. 1 and 4 only
  3. 1, 2 and 3
  4. 2, 3 and 4 only
ANSWER B

Exp: Pobitora has highest density of Rhinos. It hosts 100 rhinos within 16 sq.km. Kaziranga has the highest number of Rhinos.

  1. Consider the following books:
  1. Silent spring by Rachel Carson.
  2. Man and Nature by G.P. Marsh.
  3. Small is beautiful by E.F. Schumacher.
Which of these books have been influential in generating the waves of Environmentalism on the modern period?
  1. 1 and 2 only
  2. 1 and 3 only
  3. 2 and 3 only
  4. 1, 2 and 3
ANSWER D

Self explanatory

  1. Which of the following limits the number of trophic levels in a food chain?
  1. Decrease in energy at higher trophic levels.
  2. Deficient food supply
  3. Polluted air
  4. Water
ANSWER A

Exp: Trophic level transfer efficiency is low and it is nto possible to have more than six trophic levels in a ecosystem.

  1. Which of the following forms the main photo synthetic body of lakes and produces food and oxygen that support most of the lake’s consumers?
  1. Limnetic zone
  2. Littoral zone
  3. Profundal zone
  4. Benthix zone
ANSWER A

Self explanatory

  1. Which of the following has the highest percentage of endangered species?
  1. Insects
  2. Mammals
  3. Amphibians
  4. Reptiles
ANSWER C

Exp: Reason: Amphibians are leading taxonomic group threatened with losses. The reason why amphibians find it difficult is their biphasic life style with life stages relying on both aquatic and terrestrial systems, their moist perable skin which is a web. Thus they are most suspectable to human induced environmental changes.

  1. Consider the following statements about a wild species.
  1. It migrates from the cold northern regions of Siberia to the warmer regions of the world, including the Indian subcontinent.
  2. It is listed in the convention on migratory species of wild animals, also known as Bonn convention.
  3. The poaching mainly in sindh province along the international border is not only a cause of serious concern for India but also in violation of wildlife protection laws and international conventions.
  4. Its hunting has been banned by Pakistan Supreme Court recently.
Which of the following bird is discussed in the above given statements?
  1. Great Indian Bustard
  2. Finnish gane
  3. Barnacle Goose
  4. Houbara Bustard
ANSWER D

Self explanatory

  1. Which of the following ecosystems have highest levels of energy flow?
  1. Unsubsidised natural solar powered ecosystem.
  2. Natural subsidized solar powered ecosystem.
  3. Man powered solar powered ecosystem
  4. Fuel powered ecosystem.
ANSWER D

Exp:
  1. Unsubsidised natural solar powered ecosystem - Range 1000-10,000 kcal/m2/year
  2. Natural subsidized solar powered ecosystem - Range 10,000-50,000 kcal/m2/year
  3. Man subsidised solar powered ecosystem - Range 10,000-50,000 kcal/m2/year
  4. Fuel powered ecosystem - Range 1,00,000-30,00,000 kcal/m2/year

  1. With respect to Ecological succession, consider the following statements:
  1. Change of community structure due to environmental change through time is called succession.
  2. Climax community once achieved, remains in stable equilibrium always.
Which of the given above statement(s) is/are correct?
  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2

ANSWER A

Exp: Climax community may be resilient and stable over long periods but also may undergo change in community structure because of external factors (eg: climate change) as well as internal factors. It is perhaps more accurate to say that the rate of succession is so slow is a climax community that from the perspective of a single human life, it appears to be unchanging.

  1. Which of the factors contribute towards coral bleaching?
  1. Increase in sea temperature.
  2. Marine pollution.
  3. Eutrophication of coastal waters.
  4. Unsustainable fishing practices.
  5. Ocean acidification.
Which of the given above statement(s) is/ are correct?
  1. 1, 2 and 3 only
  2. 1, 3 and 4 only
  3. 1, 2, 3 and 4 only
  4. 1, 2, 3, 4 and 5
ANSWER D

Self explanatory

  1. With respect to wetlands, consider the following statements:
  1. Wetlands act as lungs of the earth
  2. Wetland ecosystem is one of the most threatened ecosystem due to human intervention.
Which of the given above statement(s) is/are correct?
  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2
ANSWER C

Self explanatory

Comments

  1. Kiru5/09/2017 09:47:00 am

    Questions are very analytical and if very high standard and serve the dual purpose of tnpsc as well as Upsc preparation. Thanks for the useful initiative Shalini mam...

    ReplyDelete
    Replies
    1. TnpscAura5/09/2017 10:52:00 am

      Thank you for your positive comments!!!

      Delete

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