Environment and Ecology study material for UPSC CSE help you Learn about all the aspects of Environment and Ecology. Interactive video lectures in every lesson will help you better understand a lesson.


If you are an IAS aspirant, you must be well aware that Environment and Ecology is an important aspect of the UPSC prelims as well as the Mains Syllabus. The fact that it is connected with current affairs makes it all the more interesting. It also has an overlap with other subjects such as Geography, Economy, and Social studies for the UPSC exam.

Our environment study book for IAS enables you to get a clear understanding of all the aspects of the topic. Not just that, the interactive video lectures in every lesson will help in better understanding of the lesson. 

Some benefits of environment study material from Wise IAS:

  • One of the main benefits is that you will get clarity and a good understanding of the subject.
  • You can evaluate your performance daily with the help of 2 practice answers given at the back of every lesson.
  • The video lectures offer even more understanding of the subject.
  • Our Wise IAS notes cover the complete syllabus for the UPSC CSE exam.

The main focus areas in environment study notes for IAS:

  • Environment ecology
  • Institutions
  • Climate changes
  • Biodiversity
  • Acts/ laws/ policies related to environment

If we have a look at the examination trend, since 2011, the environment and ecology play a crucial role in the UPSC prelim exams. According to the trend analysis for the environment section of the UPSC prelim exam, 10 to 20 questions may be asked approximately. 

As per the UPSC prelims syllabus, general issues on Biodiversity, climate change, and environmental ecology which do not need subject specialization are a part of the environment section. It has been observed that most of the time, candidates neglect these subjects as they find them easier. However, a lack of preparation can result in negative scoring. It is crucial to have a strong understanding of the basic environment topics to deal with the questions from the Environment and Ecology segment. 

Importance of environment section in UPSC

  • In the UPSC prelims, at least 15 to 20 questions are linked with the environment section directly or indirectly.
  • In the UPSC mains, you can expect at least 2-3 questions from this section. Having a good knowledge of environmental concepts can help in answering in a better way.
  • Questions about the environment may be asked in the IAS interview as well.

You must include in your studies international and national initiatives related to the environment and ecology. You must also study environment theory, national parks, reserves, etc. last but not the least, study about various species and chemicals and pollutants. 

It has been observed that students find it challenging to prepare subjects like these. The UPSC preparation should consist of reading our study material and relevant NCERT books along with tracking current affairs. For thorough preparation, you must also go through the previous year question papers. 

For more information on online environmental courses for IAS, connect with Wise IAS. 


How to best use these Environment notes for UPSC preparation?

  • Aspirants often have the Environment related relevant information but presenting all the information in the IAS exam becomes a challenge, especially in the UPSC mains.
  • Make a habit of listing current affairs along with static parts of the UPSC notes.
  • If one goes through the UPSC previous year question papers, one can see the nature of questions are changing. While the emphasis on basis concepts and static part is still there, the dynamic aspects are getting more weightage.

Few Environment questions from UPSC previous year question papers are given below.

Q.1 Consider the following pairs:

Terms sometimes seen in the news Their origin

  1. Annex- I Countries: Cartagena Protocol
  2. Certified Emissions Reductions: Nagoya Protocol
  3. Clean Development Mechanism: Kyoto Protocol

Which of the pairs given above is/are correctly matched?

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

Ans. C

Q 2 Which of the following best describes/describe the aim of ‘Green India Mission’ of the Government of India?

  1. Incorporating environmental benefits and costs into the Union and State Budgets there by implementing the ‘green accounting’
  2. Launching the second green revolution to enhance agricultural output so as to ensure food security to one and all in the future
  3. Restoring and enhancing forest cover responding to climate change by a combination of adaptation and mitigation measures

Select the correct answer using the code given below.

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

Ans. C

Q.3 What is/are the unique about the ‘Kharai Camel’ a breed found in India

  1. It is capable of swimming up three kilometers in seawater
  2. Its survives by grazing on mangroves
  3. It lives in the wild and cannot be domesticated

Select the correct answers using the code given below

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

Ans. A

Q.4 What is ‘greenhouse gas protocol ‘?

  1. it is an international accounting tool for government and business leaders to understand, quantify and manage greenhouse gas emissions
  2. it is an initiative of the united nations to offer financial incentives to developing countries to reduce greenhouse gas emissions and to adopt eco-friendly technologies
  3. it is an inter-governmental agreement ratified by all the member countries of the united nations to reduce greenhouse gas emissions to specified levels by the year 2022
  4. it is one of the multilateral REDD+ initiatives hosted by the world bank

Ans. A

Q.5 With reference to ‘Agenda 21’, sometimes seen in the news, consider the following statements:

  1. It is a global action plan for sustainable development.
  2. It originated in the World Summit on Sustainable Development held in Johannesburg in 2002.

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

Ans. A

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  • 30 Lessons
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  • 5 Quizzes

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