One of the most popular Science optionals; the choice of many toppers

ZOOLOGY for IAS & IFS Main: Online Course

Always a highly scoring optional known to produce IAS & IFoS toppers. Evolution students have been claiming more than 80% of all selections with Zoology for last 15 years.
Join this course for: targeted coverage, complete notes, updated content and mentoring by faculty.
Request for counselling

Admission now open for this course.


Dr. Abhishek Kumar, Dr. Yadav & Ms. Payal Das

Modules of the course

1. Video-lectures on all topics of the syllabus 2. Printed Study material 3. Weekly live classes for doubt removal and guidance 4. Tests papers and selected model answers 5. Direct faculty access through emails


Evolution Online Learning App on a single device (Accessible on Android and iOS Mobile Phones and Tablets)

Course length

About 240 Hours of Video Content

Study material

In printed or digital format, depending on the package

Access duration

6 months - 1 year depending on the package


₹ 38,000 - 47,000 inclusive of 18% GST depending on the package
Ready to join? Start the registration process


Selections in the UPSC Civil Service Examination and Indian Forest Service Examination


All India Rank -1 in the UPSC Civil Service Examination and Indian Forest Service Examination


Positions within the Top-10 lists of the UPSC Civil Service Examination and Indian Forest Service Examination

Why Zoology? 

Highly scoring

With our guidance, getting 60 percent or more becomes easy in this optional. Our students have achieved that year after year.
This is the kind of score that UPSC Toppers get. You can easily touch that score with Zoology.

Excellent results

Every year, 80% of the Zoology selections are from Evolution. Top Rankers like Rachit Raj (Rank 3, IAS 2013), Dr. Arun Thambhuraj (Rank 6, IAS 2012), Dr. Adapa Karthik (Rank 1, IAS 2007), Dr. Amit Saini (Rank 2, IAS 2006), Dr. Basant Garg (Rank 2, IAS 2004), have all been trained by us for Zoology optional.

Well-defined and manageable syllabus

Being a science subject, it has a straight and clearly laid out syllabus. With a proper planning provided by us, you can cover the entire syllabus in a reasonable time frame with ample time to spare for General Studies. After a proper coverage and notes-making, revision is also quick and effective.

Direct questions

Questions in Zoology are direct in nature. With basic concept and facts, you can answer most of the questions.During UPSC evaluation, there is always a great degree of objectivity because of the straight forward nature of questions. With our guidance, you can comfortably write fact-rich, coherent and well-illustrated answers.  

Simple answers can fetch high marks

There is no unpredictability in the scores. You write well and you score well. No guessing games like may humanity subjects.You will not be losing any marks on the grounds that your line of arguments / interpretation did not match with that of the examiner. In sciences, there are only facts and concepts, which if correct, are bound to fetch you high marks.

Easy to get a competitive advantage

Most of your competitors, who are not getting a good guidance, would rely on common resources and find the subject too big and hard to manage. We have made Zoology preparation simpler for you with streamlined content, updated and enriched material and step-by-step mentoring. We will also help in organizing the entire course as per the demands of the examination. Thus, you can understand the emphasis areas and focus on them appropriately.

Principal areas of coverage in this course

Paper 1





Economic Zoology


Instrumentation Methods

Paper 2

Cell Biology


Evolution and Systematics

Plant Breeding



Physiology (with special reference to mammals)

Developmental Biology

Click here to see the detailed syllabus of Zoology for IAS & IFS Main

Why you should be with Evolution for Zoology

Evolution is India's most credible institute for Zoology with 80% plus of all UPSC selections with this optional in the last 16 years. Our faculty, our notes and our guidance combine to give you far superior preparation than your competitors.

Outstanding faculty

Experienced and committed experts from reputed colleges of DU and other premier institutions such as IARI, IITs, FRI
Each expert with deep insight into the needs and trends of the UPSC Examinations

Clear competitive edge

Specialist faculty helps you in developing clear concepts of the topics and also bring marks-fetching depth and value addition to your answers.

We simplify everything

We specialise in making the subject matter beginner friendly.
While teaching, we break each topic into logical sub-topics and then go about building concepts step-by-step.

Complete & authentic material

Crisp notes on all the topics – easy to grasp and retain
Each topic prepared from standard reference books
All notes prepared by our in-house research team

Unmatched mentoring

Special Sessions with Faculty to address all your doubts and queries
We help you see the larger picture and implement your strategy with micro-planning which is in 100% alignment with the examination

Insights on high scoring answers

With the teacher's guidance, you will learn the intricacies and techniques to write effective and high score-fetching answers, without which much of the preparation may go in vain.


All the Evolution Online Courses always include:

  • Lecture videos and tutorials covering the entire syllabus in an examination oriented manner
  • Supporting study material in printed or digital form, depending on the course and package
  • Access to weekly live sessions by the faculty to address doubts and share tips and methods about the CSE and IFS Examination
  • Direct access to the faculty through e-mail to discuss your queries and issues. Our faculty will respond by email or call depending on the nature of your query.
  • Generous course access duration and video viewing allowance
  • Availability on Android and iOS Apps - compatible with both mobile phones and tablets

Features of Evolution Online Programmes

Excellent preparation guidance and content for CSE & IFS, wherever you are.


Get access to excellent preparatory guidance anywhere, anytime.


Experienced experts from premier universities with great track-record of results

Lecture videos

Engaging lecture videos to cover the syllabus in a streamlined, exam oriented manner

Study material

Study material based on the best text books, journals and web-resources


You can study any time that suits you. There is no need to log in at a specific time.


Lower course fee for the same preparatory guidance and zero overhead costs


Targeted approach based on extensive research into the pattern and trends

Beginner friendly

Beginner friendly course design, covering from the basics to  required advanced level


Modern teaching tools and methods for easy and better mastery of preparation

Test Papers

Practice question papers included with every course to give you directed exercise

Live interaction

Weekly live interactions with the faculty for doubt removal and preparation guidance

Support Emails

Reach the faculty directly through e-mail to discuss your queries and issues.

Toppers recommend Evolution

Vishal Khatri

IFS Rank - 5, 2019

I had joined the following courses at Evolution, both in online mode - 1) Interview Preparation Module with  2 in-person mock interview + lectures on Current Affairs and Forestry 2) Prelims modules - Current affairs, Environment and Science-Tech.

Evolution helped me quickly improve my Env preparation from a generalist CSE paper 3 level to the depth required for IFoS. I have seen many of my friends struggle in Env and SciTech due to lack of a good, consolidated source. Evolution's extremely relevant and comprehensive coverage of these topics definitely added value to my preparation.

Abhishek Sir's lectures were rigorous, yet focused and engaging. The narrative format of delivery improved my understanding, as well as retention, reducing the need for revision. His broader guidance on framing of answers (structuring, prioritisation) and IFoS-specific questions was also immensely helpful. Chiranth Sir helped me cover high-scoring areas like Env legislation for Prelims and revising Forestry. I would unhesitatingly recommend these courses to any serious aspirant. I've myself been using them for the coming attempt.

Lakshmi Nagappan

IAS Rank - 45, 2018 | IFS Rank - 50, 2018

I joined a course on Geology at Evolution under the guidance of Sir Prabhakar Priyadarshi (AIR 31, IFS 2017) .

Joining this course made my work simpler... I am glad to have made the right choice and grateful for his immense help to crack the examination successfully.

Vaibhava Srivastava IFS Rank 1, IAS Rank 93

Vaibhava Srivastava

IFS Rank - 1, 2017 | IAS Rank - 92, 2017

I have learnt so much from the way Abhishek sir articulates and presents his thoughts. Thank you so much, sir, for your encouragement, guidance and support!

Prashant sir and Chiranth sir helped me immensely in covering Forestry in such a little time.
Abhishek sir, thank you so much for creating such an enabling and friendly environment!


IFS Rank - 1, 2016

I prepared both my optional subjects with Evolution for the Civil Service and IFS Examinations.

Despite being a B.Tech. in Computer Science, I mastered subjects like Botany with Forestry with reasonable ease and felt confident in the exams.

The classroom course and notes have been exactly in tune with the needs to the examination. For most of my preparation, I relied only on my class-notes.

Anupam Sharma

IFS Rank - 2, 2017

Every member of the Evolution team (Abhishek sir, Suman ma’am, Chiranth sir and others) has been a source of immense help, support, guidance and motivation for me.

In fact, now I identify myself also as a part of it. While many persons & institutions helped me in achieving my & my family’s dream, Evolution’s was the most dominant force …the Optimus Prime. I shall always remain indebted to Evolution. Thanks a lot:)

How does it work? Simple as 1, 2, 3.

During office hours (10 AM - 6 PM from Monday to Saturday), it takes only about 30 minutes to complete all these steps.
Payment: After counselling, our course advisor will send you the payment link for the course fee for the online course you plan to join.
Confirmation: After we have received the payment, our office will send you an email with confirmation of payment and enrolment form.
Admission: Once you have also filled the admission form, we will enroll you for the course and send you an email with instructions for intsalling the Evolution Learning App and your login credentials.
That's it. Now you are ready to prepare with the Evolution Online Course of your choice.


FAQs: Frequently asked questions

What type of videos will I be getting?

All the videos are recently recorded lecture videos. They contain lectures recorded in the classroom or studio set-up.
All the videos are HD quality but optimised for adaptive streaming even over low bandwidth of internet connection.
Our team is continuously creating new video lessons to incorporate recent content and modifications. So, you can be sure about the lecture video content being updated.

On what devices can the lecture videos be watched?

Our online courses are available only on our Android and iOS Apps.
You can access the course on a single Android or iOS phone or tablet.
The course will not be accessible on a PC or Mac though browser.
You must consider this factor when you are joining the course.

Can I watch the videos offline?

Yes.You can download and save the video and handouts within the App for offline viewing.
This is helpful when you do not have a very reliable internet connection.

Can I see demo videos lectures before I join?

Yes. We let you view a cross-section of our online lecture videos and tutorials. If you like what you see, you will love what the rest of the course has to offer.
Please fill in this form, and we will send you the samples.

How long will I have access to the course?

Full term GS Courses and Integrated Courses: 1 - 2 years of access depending on the package opted by you.

Full courses of optional subjects: 6 months - 1 year's access depending on the package opted by you.

Crash courses and other short courses: As specified on the course information page

On how many devices can I access my course?

You can access your online course from only one device - either a mobile phone or a tablet.
Our system will remember the device (tablet / mobile) where you first login. You will always have access on this device only.
Login from a second device will fail and such an attempt will automatically block your account.

What about notes?

Each online course will be including relevant study material in printed or digital format.
The study material is concise and aligned to the demands of the CSE and IFS Examination.

Will there be tests?

We have included a good number of practice questions in each online course offered by Evolution. You are welcome to submit your answers by email for the faculty's feedback. This will help you sharpen your answer writing skills.
Please note that Evolution Test Series is a separate programme and not a part of the online course. You can join it separately at discounted fee options for Evolution's existing students.

How will my doubts be addressed?

You will have access to weekly live session by the faculty to address your doubts and to guide you for the examination.

You can also interact with your instructor through email and also send your answers for evaluation and feedback.

How many times can I watch the lectures?

For all online courses, you have 1.5 times viewing allowance with unlimited clicks.
For eaxmple, if the total course duration is 100 hours, you total viewing allowance will be 100 hrs. x 1.5 = 150 hrs.

Any restrictions?

We have zero-tolerance policy for piracy. Our platform has in-built and continuously updating security features to detect attempts for multi-device login, attempts to download course content and attempts to capture the screen.
Violating accounts are automatically and permanently blocked.

What is your refund policy?

Since we let you view a cross-section of our online lecture videos and tutorials, plus chapters from our study material, we assume that you have taken an informed decision to join an online course.
Therefore, we do not offer refunds.

Do you offer discounts?

All our online courses have resaonble fee, which is significantly lower than the classroom course for the same subject. Running our service and supporting students is a significant undertaking, so we do not offer discounts.

Can I pay in instalments?

The option is available when you pay online with credit card issued by ICICI Bank, Axis Bank, HSBC Bank & Kotak Mahindra Bank.
EMI amount will be added to your monthly credit card bill for the duration you choose. Bank charges will apply.

I have some other question.

Why not? We’ll be happy to address all your queries and concerns. Please drop us a mail at or send an SMS to +91-9810975937.Our team will be in touch with you soon.

Benefits of online preparation

More flexibility

There is no need to leave your hometown or job or your university course to join the coaching class. You can attend your classes anytime - because we give you an asynchronous class: an online class where you do not have to log in at a specific time for a live session, but you can study anytime.

Same teachers and the same content

At Evolution online courses, the same teachers create online lectures and tutorials who have been teaching for years in our classroom courses. So, you get the same quality of preparation that your classroom peers are getting. We also make no difference in the content that we share with our students, irrespective of what mode of preparation they have chosen to adopt - classroom, online or guided self-study.

Lower costs

You are studying online means that you pay less tuition fee and bear no overhead cost (like paying for your stay in a big city). Depending on the course and the required duration of stay in a city like New Delhi, you could be saving up to Rs. 3,00,000 (Rupees three lakh) in a year.

Self-discipline and responsibility

Studying online requires more self-motivation and time-management skills because you will spend a lot of time on your own. Thus, your online course will not only teach you your subject, but it will also help you become more self-motivated, a trait that will make you stand out in the UPSC journey.

Opportunities for faculty interactions

All online courses feature weekly live sessions by the faculty to address your doubts and to guide you for the examination. Moreover, you can reach the faculty directly through e-mail to discuss your queries and issues. Our faculty will respond by email or call depending on the nature of your query.

More choice of courses

We, at Evolution Online, are continuously creating new meaningful courses for the CSE and IFS Examination. Studying online allows you to no longer worry about class location or duration when you are choosing what to learn next. Feel free to take any new course that you find beneficial.

Do you have questions? We can help you.

  • We will always give you unbiased academic advice based on your academic background and stage of preparation.
  • Our advisors will offer suggestions drawn fom their experience of having interacted with thousands of IAS & IFS aspirants.
  • Our academic advisors keep themselves updated with the latest trends of the IAS and IFS examination.
  • Depending on your present level, we will suggest you the best course for starting your preparation - Classroom, Online or Guided Self-study.