UPSC Prelims Full Length Test - 68

Reduced tillage practices are helpful for soil health in many ways. Consider the following statements with this context:
  1. Reduced tillage helps to improve the soil food web and biodiversity
  2. Reduced tillage brings down the requirement of herbicides
  3. Reduced tillage helps in mitigation of GHG emissions
Which among the above is / are correct statements?
The so called “Lessepsian migration” is __:
1. related to marine species of across Suez Canal
2. due to rise of temperature of the ocean water
Which among the above statements is/ are correct?
Which of the following is / are correct observations about the terrestrial and ocean biodiversity?
  1. Terrestrial biodiversity tends to be highest at low latitudes near the equator
  2. Terrestrial biodiversity is up to 25 times greater than ocean biodiversity
Select the correct option from the codes given below:
Consider the following planets:
  1. Venus
  2. Saturn
  3. Uranus
Which of the above rotate from east to west?
A seismic shadow zone is an area of the Earth's surface where:
  1. seismographs cannot detect an earthquake  
  2. neither the P-waves nor the S-waves reach the surface
Which of the above statements is/are correct?

Category: UPSC

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