UPSC CSE PRELIMS 2020 STUDY PLAN – DAY 102

prelims 2020

UPSC CSE PRELIMS 2020 STUDY PLAN – DAY 102

TOPICS TO BE COMPLETED TODAY

HEADING

day 102

UPSC PRELIMS 2020 STUDY PLAN  (Click Here For Full Timetable)

 

VALUE ADDED NOTES  (SAMPLE)

Conservation of Biodiversity & Environmental Conventions

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MOCK PRELIMS QUIZ ON TODAY’S TOPIC

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General Issues on Environmental ecology, Bio-diversity and Climate Change- Day 102 Quiz (Click Here)

 

QUIZ QUESTIONS 

1. Which one of the following is the characteristic climate of the Tropical Savannah Region?
  • a. Rainfall throughout the year
  • b. Rainfall in winter only
  • c. An extremely short dry season
  • d. A definite dry and wet season

 

2.With reference to the

  1. Rotation of the Earth
  2. Air pressure and wind
  3. Density of ocean water
  4. Revolution of the Earth

Which of the above factors influence the ocean currents?

  • a. 1 and 2 only
  • b. 1,2 and 3 only
  • c. 1 and 4
  • d. 2, 3 and 4.

 

3. With reference to the wetlands of India, consider the following statements:

  1. The country’s total geographical area under the category of wetlands is recorded more in Gujrat as compared to other states
  2. In India, the total geographical area of coastal wetlands is larger than that of inland wetlands

Which of the statements given above is/are correct?

  • a. 1 only
  • b. 2 only
  • c. Both 1 and 2
  • d. Neither 1 nor 2

 

4. The Himalayan Range is very rich in species diversity. Which one among the following is the most appropriate reason for this phenomenon ?
  • a. It has a high rainfall that supports luxuriant vegetative growth.
  • b. It is a confluence of different bio­geographical zones.
  • c. Exotic and invasive species have not been invasive species have not been introduced in this region.
  • d. It has less human interference.

 

5. The lower Gangetic plain is cahrac­terised by humid climate with high temperature throughout the year. Which one among the following pairs of crops is most suitable for this region ?
  • a. Paddy and cotton.
  • b. Wheat and jute.
  • c. Paddy and jute.correct
  • d. Wheat and cotton.

 

6. What could be the main reason/reasons for the formation of African and Eurasian desert belt ?

  1. It is located in the sub­tropical high pressure cells.
  2. It is under the influence of warm ocean currents

Which of the statements given above is/are correct in this context ?

  • a. 1 only
  • b. 2 only
  • c. Both 1 and 2
  • d. Neither 1 nor 2

 

7. The Brahmaputra, Irrawaddy and Mekong rivers originate in Tibet narrow and parallel mountain ranges in their upper reaches. Of these rivers, Brahmaputra makes a “U” turn in its course to flow into India. This “U” turn is due to ?
  • a. Uplift of folded Himalayan series.
  • b. Syntaxial bending of geologically young Himalayas.
  • c. Geo­tectonic disturbance in the tertiary folded mountain chains.
  • d. Both (a) and (b) above.

 

8. Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity?
  • a. Oceans, lakes, grasslands, mangroves
  • b. Mangroves, oceans, grasslands, lakes
  • c. Mangroves, grasslands, lakes, oceans
  • d. Oceans, mangroves, lakes, grasslands

 

9. Contour bunding is a method of soil conservation used in
  • a. desert margins, liable to strong wind action
  • b. low flat plains, close to stream courses, liable to flooding
  • c. scrublands, liable to spread of weed growth
  • d. None of the above

 

10. Which of the following is/are unique characteristic/characteristics of equatorial forests?

  1. Presence of tall, closely set trees with crowns forming a continuous canopy
  2. Coexistence of a large number of species
  3. Presence of numerous varieties of epiphytes

Select the correct answer using the code given below:

  • a. 1 only
  • b. 2 and 3 only
  • c. 1 and 3 only
  • d. 1, 2 and 3

 

11. The annual range of temperature in the interior of the continents is high as compared to coastal areas. What is / are the reason / reasons?

  1. Thermal difference between land and water
  2. Variation in altitude between continents and oceans
  3. Presence of strong winds in the interior
  4. Heavy rains in the interior as compared to coasts

Select the correct answer using the codes given below.

  • a. 1 only
  • b. 1 and 2 only
  • c. 2 and 3 only
  • d. 1, 2, 3 and 4

 

12. The seasonal reversal of winds is the typical characteristic of
  • a. Equatorial climate
  • b. Mediterranean climate
  • c. Monsoon climate
  • d. All of the above climates

 

13. Consider the following statements :

  1. The winds which blow between 30° N and 60° S latitudes through-out the year are known as westerlies.
  2. The moist air masses that cause winter rains in North-Western region of India are part of westerlies.
  • a. 1 only
  • b. 2 only
  • c. Both 1 and 2
  • d. Neither 1 nor 2

 

14. In India, in which one of the following types of forests is teak a dominant tree species?
  • a. Tropical moist deciduous forest
  • b. Tropical rain forest
  • c. Tropical thorn scrub forest
  • d. Temperate forest with grasslands

 

15. “Each day is more or less the same, the morning is clear and bright with a sea breeze; as the Sun climbs high in the sky, heat mounts up, dark clouds form, then rain comes with thunder and lightning. But rain is soon over.” Which of the following regions is described in the above passage?
  • a. Savannah
  • b. Equatorial
  • c. Monsoon
  • d. Mediterranean

 

16. In the South Atlantic and South-Eastern Pacific regions in tropical latitudes, cyclone does not originate. What is the reason?
  • a. Sea surface temperatures are low
  • b. Inter-Tropical Convergence Zone seldom occurs
  • c. Coriolis force is too weak
  • d. Absence of land in those regions

 

17. In which of the following regions of India are shale gas resources found?

  1. Cambay Basin
  2. Cauvery Basin
  3. Krishna-Godavari Basin

Select the correct answer using the code given below.

  • a. 1 and 2 only
  • b. 3 only
  • c. 2 and 3 only
  • d. 1, 2 and 3

 

18. Which of the following has/have shrunk immensely/dried up the recent past due to human activities?

  1. Aral Sea
  2. Black Sea
  3. Lake Baikal

Select the correct answer using the code given below:

  • a. 1 only
  • b. 2 and 3
  • c. 2 only
  • d. 1 and 3

 

19. Which one of the following is an artificial lake?
  • a. Kodaikanal (Tamil Nadu)
  • b. Kolleru (Andhra Pradesh)
  • c. Nainital (Uttarakhand)
  • d. Renuka (Himachal Pradesh)

 

20. With reference to agricultural soils, consider the following statements:

  1. A high content of organic matter in soil drastically reduces its water holding capacity.
  2. Soil does not play any role in the sulphur cycle.
  3. Irrigation over a period of time can contribute to the salinization of some agricultural lands.

Which of the statements given above is/are correct?

  • a. 1 and 2 only
  • b. 3 only
  • c. 1 and 3 only
  • d. 1, 2 and 3

 

21. Consider the following statements:

  1. Most of the world’s coral reefs are in tropical waters.
  2. More than one-third of the world’s coral reefs are located in the territories of Australia, Indonesia and Philippines.
  3. Coral reefs host far more number of animal phyla than those hosted by tropical rainforests.

Which of the statements given above is/are correct?

  • a. 1 and 2 only
  • b. 3 only
  • c. 1 and 3 only
  • d. 1, 2 and 3

 

22. Which of  the following  are the  key features  of  ‘National  Ganga  River Basin Authority (NGRBA) ?

  1. River basin  is  the  unit  of  planning  and management.
  2. It   spearheads   the   river   conservation efforts at the national level.
  3. One of the Chief Ministers of the States through     which     the     Ganga     flows becomes  the  Chairman  of  NGRBA  on rotation basis.

Select the correct answer using the code given low.

  • a. 1 and 2 only
  • b. 2 and 3 only
  • c. 1 and 3 only
  • d. 1, 2 and 3

 

23. Consider the following crops of India:

  1. Groundnut
  2. Sesamum
  3. Pearl millet

Which of the above is/are predominantly rained crop/crops?

  • a. 1 and 2 only
  • b. 2 and 3 only
  • c. 3 only
  • d. 1,2 and 3

 

24. When you travel in Himalayas,you will see the following. :

  1. Deep gorges
  2. U­turn river courses
  3. Parallel mountain ranges
  4. steep gradients causing land­sliding

Which of the above can be said to be the evidences for the Himalayas being young fold mountains?

  • a. 1 and 2 only
  • b. 1, 2 and 4 only
  • c. 3 and 4 only
  • d. 1, 2, 3 and 4

 

25. The Narmada river flows to the west, while most other large peninsular rivers flow to the east. Why?

  1. It occupies a linear rift valley.
  2. It flows between the Vindhyas and the Satpuras.
  3. The land slopes to the west from Central India.

Select the correct answer using the codes given below.

  • a. 1 only
  • b. 2 and 3
  • c. 1 and 3
  • d. None

 

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