IASbaba’s 60 Day Plan- Prelims Test 2018 ENVIRONMENT & CURRENT AFFAIRS [Day 12]

  • IASbaba
  • March 16, 2018
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IASbaba Prelims 60 Days Plan
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Hello Friends, 

Welcome to Day-12.

Importance of Self – Tracking: Learning from Last Year

Last year, aspirants used to comment their answers in the comment box on daily basis. There were huge participation in discussion. Putting answers in comment box has been very effective to self-track yourself after updating the score. In the end, you can cross check your performance through Disqus profile.

It was highly effective in the last edition of 60 Days that propelled aspirants to monitor their performance and learn through discussion. Let you solve these questions with full honesty and write your result in the comment box. Interact with peers to know your mistakes.

The importance of this initiative stands time-bound and aggressive reverse engineering to learn the concepts. Many of you must be busy with your own strategy but let us tell you honestly that in the last two months, it is very important to revise and consolidate your learning. Just reading won’t suffice.

So, take out few hours from your schedule and make it a revision exercise.

How can you make the best use of it?

Be honest to your effort and do not start competing with XYZ aspirants here just for the sake of marks. It is more important for you to introspect and check your learning than focusing on others. Try to answer the questions in 20 minutes only. 

Do not get into negative feeling that I don’t have enough knowledge to answer these questions. Feel like you are taking the real exam. What would be your response then?

The same will be replicated in UPSC exam. Here, you get marks only and nothing else matters. So, make effort to know the answers to all questions. Do not cheat 😛


DETAILED MICRO ANALYSIS MATRIX SAMPLEis given here. You can download this and do an assessment for yourself.  DOWNLOAD

  • You can copy paste the same format/modify as per your need in Google Spreadsheet and update it on daily basis.
  • Feedback talks about daily test results.
  • Follow-up talks about daily target achieved from sources and the number of revisions to do/done and dates. Sources column is to ensure that aspirants do not run behind various sources and follow the same throughout.


Are you ready? Let’s start!


Q.1) Which of the following are the goods and services provided by ecosystems?

  1. Provision of food, fuel and fiber
  2. Purification of air and water
  3. Pollination of plants, including many crops Control of pests and diseases
  4. Cultural and aesthetic benefits

Select the correct answer using the codes given below.

  1. 1, 2 and 3 only
  2. 2, 3 and 4 only
  3. 1, 3 and 4 only
  4. All the above

Q.2) Which of the following of a species best describes, how an organism or population responds to the distribution of resources and competitors, and how it in turn alters those same factors for its survival?

  1. Ecotone
  2. Ecology
  3. Ecological niche
  4. Edge effect

Q.3) Consider the following statements about the biosphere.

  1. The energy required for the life within the biosphere comes from the air, water and soil.
  2. The nutrients necessary for living organisms come from the sun.
  3. Living organisms are uniformly distributed throughout the biosphere.

Select the correct answer using the codes given below.

  1. 1 and 3 only
  2. 1 only
  3. 2 and 3 only
  4. None

Q.4) Consider the following statements about the energy flow among different trophic levels.

  1. The flow of energy from producer to top consumers is called energy flow which is bidirectional.
  2. The pyramid of energy is always upward, with a large energy base at the bottom.
  3. Biomass pyramid concept helps to explain the phenomenon of biological magnification.

Which of the above statements is/are correct?

  1. 1 and 2 only
  2. 1 and 3 only
  3. 2 only
  4. 3 only

Q.5) Biomagnification refers to the tendency of pollutants to concentrate as they move from one trophic level to the next. Consider the following statements.

  1. In biomagnification there is an increase in concentration of a pollutant from one link in a food chain to another.
  2. In order for biomagnification to occur, the pollutant must be long-lived, mobile, soluble in water and biologically inactive.

Which of the above statements is/are correct?

  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. None

Q.6) Consider the following pair of biotic interactions.

Type of interaction Result
     1. Mutualism There is no net benefit or harm to either species
     2. Amensalism One species is harmed, the other is unaffected
     3. Neutralism Both species benefit.

Which of the above pairs is/are correct?

  1. 1 and 2 only
  2. 1 and 3 only
  3. 2 only
  4. 3 only

Q.7) Consider the following regarding types of corals:

  1. Fringing reefs: reefs that grow close to the shore and extend out into the sea like a submerged platform.
  2. Barrier reef: reefs separated from the land by wide expanses of water and follow the coastline.
  3. Atolls: a roughly circular ring of reefs surrounding a lagoon, a low lying island, common in the Indian and South pacific oceans.

Which of the above is/are correct?

  1. 1 and 2
  2. 2 only
  3. 2 and 3
  4. 1, 2 and 3

Q.8) Nayachar Island is a recently emerged riverine island. With 151 species it has become a rare case of ecology. In which of the following rivers does it occur?

  1. Ganga
  2. Hoogly
  3. Narmada
  4. Tungabhadra

Q.9) Consider the following statements regarding Bioindicators:

  1. A bioindicator is a living organism that gives us an idea of the health of an ecosystem.
  2. Only microorganisms act as bioindicators.

Which of the above statements are correct?

  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2

Q.10) Bay of Bengal hosts a ‘dead zone’ of around 60,000 square kilometer. Which of the following statements correctly defines a dead zone?

  1. It is a region which is almost devoid of dissolved oxygen.
  2. It is a region where population of fish has become almost nil because of over fishing.
  3. It is a region where the population of predator exceeds the prey.
  4. It is a zone of dying coral reefs.

Q.11) The movement of vessels around the world requires the intake of ballast water to give them a safe degree of stability when light. The release of ballast water at the port is considered to be a big ecological hazard because:

  1. It increases the temperature of the coast by several degrees.
  2. It causes heavy metal poisoning.
  3. It is responsible for transporting alien species in new ecosystems.
  4. It reduces the dissolved oxygen in the ocean water.

Q.12) The government has constituted a committee to investigate into illegal cultivation of HT cotton in four states. The HT of HT cotton stands for

  1. Hybrid transform
  2. Herbal treatment
  3. Herbicide tolerant
  4. High Tech

Q.13) Which of the following statements are correct regarding ‘Blue Flag’ certification?

  1. It is given to cities which have taken stringent measures to curb air pollution.
  2. It is a certification given by Foundation for Environmental Education (FEE).

Select the code from following:

  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2

Q.14) A new species of night frog Nyctibatrachus Mewasinghi has been discovered. Where is it found?

  1. Sunderbans
  2. Western Ghats
  3. Nicobar Islands
  4. Meghalayan Plateau

Q.15) Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight. Consider the following about VOCs:

  1. VOCs are produced from the evaporation of naturally-occurring compounds such as terpenes or eucalypts.
  2. VOCs are formed from the incomplete combustion of fossil fuels, from the evaporation of solvents and fuels, and from burning plant matter.

Which of the statements given above is/are correct?

  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2

Q.16) Consider the following pairs with regard to aquatic ecosystem and identify the correct pair/s from the code given below:

Aquatic Organism : : Description

  1. Benthos : : organisms that are found living in the bottom of the water mass
  2. Nektons : : organisms which remain attached to stems and leaves of rooted plants and substances emerging above the bottom mud
  3. Neustons : : groups which contains animals/organisms which are swimmers


  1. 1 only
  2. 1 and 2 only
  3. 2 and 3 only
  4. 1, 2 and 3

Q.17) Which of the following statement is/are true with regard to Wetlands?

  1. Sediments deposited by the rivers and river floodplains helps in the formation of wetlands.
  2. Wetlands are found from the tundra to the tropics and on every continent.
  3. Lakes are generally less important when compared to wetland from the viewpoint of ecosystem and biodiversity conservation.

Choose appropriate answer:

  1. 1 only
  2. 1 and 3 only
  3. 1 and 2 only
  4. All the above

Q.18) Which of the following are the physical processes responsible for the formation of Estuaries?

  1. Rising sea level
  2. Movement of sand and sandbars
  3. Glacial processes
  4. Tectonic processes

Select the appropriate code:

  1. 1 and 4 only
  2. 1, 3 and 4 only
  3. 1, 2 and 4 only
  4. All of the above

Q.19) Consider the below statements in regard to plants found in Desert ecosystem:

  1. Root system is not developed well and spread over small area to retain water.
  2. Leaves are absent or reduced in size.
  3. In some plants even the stem contains chlorophyll for photosynthesis.

Which of the statements given above is/are correct?

  1. 1 only
  2. 1 and 2 only
  3. 2 and 3 only
  4. 1, 2 and 3

Q.20) Consider the below statements and select the correct statement from the codes given below:

  1. When succession is brought about by living inhabitants of that community itself, the process is called Autotrophic succession
  2. When succession is brought about by outside forces is known as Allogenic succession.

Choose the correct answer:

  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2

Q.21) Western Ghats has very rich biodiversity as compared to Eastern Ghats, because –

  1. Western ghats are continuous mountains.
  2. Western Ghats is area of high orographic precipitation.
  3. Many major rivers have its source at Western Ghats.

Select the correct answer using the codes given below:

  1. 2 only
  2. 2 and 3 only
  3. 1 and 3 only
  4. 1, 2 and 3

Q.22) Consider the following statements with respect to ‘North Natuna Sea’

  1. Philippines renamed the part of South China Sea that falls under their claimed exclusive economic zone (EEZ) as ‘North Natuna Sea’
  2. Part of the ‘North Natuna Sea’ falls in China’s nine-dash line

Select the correct statements

  1. 1 Only
  2. 2 Only
  3. Both 1 and 2
  4. Neither 1 nor 2

Q.23) Which of the following statements is correct about ‘MUNTRA’, developed by DRDO?

  1. It is an Air-Borne Telemetry Receiving System for down Range Applications
  2. It is a Main Battle Tank (MBT) developed in collaboration with Combat Vehicles Research and Development Establishment (CVRDE)
  3. It is India’s first unmanned tank
  4. It is Light Combat Aircraft (LCA)

Q.24) Which of the following is aimed at improving the WASH services?

  1. Jalmani
  2. Swachh Bharat Abhiyan
  3. National Rurban Mission

Select the correct statements

  1. 1 and 2
  2. 2 Only
  3. 2 and 3
  4. All of the above

Q.25) ‘Tiwa’ tribe is found in which of the following states?

  1. Meghalaya
  2. Tripura
  3. Odisha
  4. Both (a) and (b)

Q.26) Which of the following pairs is/are correctly matched?

      World Heritage Site                  Country

  1. Okinoshima                               Japan
  2. Sambor Prei Kuk                       Cambodia
  3. Valongo wharf                          Spain

Select the correct code:

  1. 1 and 2
  2. 1 Only
  3. 1 and 3
  4. All of the above

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