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Zoology Overview

Zoology is the branch of biology that includes the study of animals and animal life. Students should get thorough with the topic of Biology since Class 11 as the syllabus carries equal distribution of questions from Class 11 and Class 12.
zoology section in the NEET question paper offers comprises 45 questions offering a total of 180 marks therefore you have to give more time to this. zoology requires a candidate to be thorough with the NCERT as the syllabus and questions for the Biology are almost entirely based on it. Analysis of NEET previous year question papers has proved that the difficulty level of the question paper has increased over the years.

Physics Important Topics
• Mechanics
• Electrodynamics
• Modern Physics
• Heat and Thermodynamics
• Optics
• Simple Harmomic Motion
• Waves

Selection of best study material:

This concept is the most important for preparation. The efficiency of resources that one utilizes for preparation results to improve the score. If we go through the opinion of many toppers and experts, the NCERT books should never be skipped for understanding the basic concepts of you study. After that the study materials provided by the KAYSONS EDUCATION is best for clearing your basic concepts as it is prepared by all the experts and well experienced teachers. The study provided by them are meant to provide the basic concepts and understand the depth of the subjects.
Since some of the questions in Biology were asked from outside the NCERT textbooks”.
You can get through other reference books to refine the preparation. These are :-
• Objective Biology by Dinesh
• Pradeep Guide on Biology
• Objective NCERT at Your Fingertips by MTG

Prepare tables and flowcharts

zoology is interesting subject, therefore you have to learn it by the help of flow charts, tables and diagrams. Taking help of personal keywords and pneumonic that will enable to remember is most useful.
As the notes provided by KAYSONS EDUCATION includes pie charts, diagrams, tables to memorize easily and understand the concept.
In zoology you have to learn the key points.

Attend the mock tests:

Aspirants should, take up as many mock tests as possible to enhance their preparation for NEET Biology. The student should attend each and every level of test conducted by KAYSONS EDUCATIONS. It includes chapter level test, unit level test and subject level test. This institution provides you a test series to the students who performs better in these tests named Doctors Paradise and Doctors Material.

Revise Regularly:

To get the proper benefits of studying and practicing one should keep revising at regular intervals. This will help in the memorizing. Candidates should make it a point to revise the entire syllabus several times before the exams so as to be thorough with each concept included in each topic. When one student do regular revision, one can keep the track of the progress of the study

Unit-1:Kingdom Animalia


Animal kingdom comprise of multicellular eukaryotic animals and is one of the kingdoms among five kingdom schemes of classification. There is a distinction in form and type of various animals; there are a few important characteristics that are regular to different organisms. Every one organisms of the Animal kingdom are multicellular still they don’t display the same example of cell organization. Organ frameworks in various animal groups display different examples of complexities. Categorization of animals can be done on the premise of the symmetry of their body. The course of action of body parts around a main line or point decides the symmetry.

Chapter Analysis:

The below given graph illustrates the above-mentioned analysis:

Year 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009
Questions 2 3 5 2 3 4 4 1 3 4 2

Unit-2: Tissues And Types Of Tissues


We all know that the human body is made up of billions of cells which differ in structures and functions. In multicellular organisms, a group of similar cells along with their intercellular constituents organise together to form a tissue, and specific a tissue performs a specific function. The similar tissues further form an organ and organs form an organ system. Different organ systems together makes an organism. In the following chapters of this unit, you will learn about the different types of tissues found in organisms and how they work.

Paper Analysis:

This unit does not hold a significant weightage in the NEET exam, but that does not mean it is not important. It is units like these that help decide your rank. Where students leave this chapter because of its lower weightage, those who take out time to master these units end up scoring a better rank.

The following are the important topics under this unit:

  • Animal tissues
  • Organ and organ system
  • Earthworm
  • Cockroach
  • Frog

Tips and Tricks:

Due to the inclusion of too many details, this unit may be difficult to memorize and learn. So do not just go ahead and mug it all up, try to keep your concepts clear regarding the structural details.

  • Start by going through the NCERT book thoroughly.
  • To get more details, follow additional reference books.
  • Learn the locations of different types of tissues.
  • Stick to the NCERT book for cockroach, frog and earthworm.
  • Solve more and more questions.
  • Revise frequently.

Unit-3: Biomolecules


Biomolecule is an organic molecule that is produced by living organism. They act as building block of life and perform important functions in living organisms. They are primarily composed of carbon, hydrogen, nitrogen, oxygen, phosphorous and Sulphur. The four common biomolecules are proteins, nucleic acid, carbohydrates and lipids. For analysis of chemical composition of organic compound, living tissues are treated with trichloroacetic acid and grind it to form slurry. For inorganic chemical composition, sample of tissue should be burnt to obtain ash.

Chapter Analysis:

There have been regular rise and fall in the number of questions asked from Biomolecules over the past 10 year. Starting from 0 questions in 2009, it reached its peak in 2013 with 4 questions, fell down to 1 in 2015, rose again to 3 in 2016, and the last paper saw 2 question being asked from this particular topic. Cumulatively, a total of 21 question have been asked from this chapter. So, we can expect atleast two questions from this chapter in the coming years.
The below given bar-graph illustrates the frequency of question appearing in the paper from this chapter:

Year 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009
Number 0 1 2 3 4 2 1 3 2 1 2

The important topics to cover from this chapter are:
• Chemical Constituent of Living Cell
• Structure and Functions of Proteins, Carbohydrates, Lipids and Nucleic Acid
• Enzymes – Types, Properties, and Enzyme action

Unit-4: Human Physiology


As we had discussed in the botany section, physiology is the study of the biological processes and phenomena occurring in an organism. Here, in the zoology section, we will explore the physiology of human beings and other animals. In the following chapters of this unit, you will learn about the major physiological processes occurring inside the human body, like respiration, digestion, circulation, locomotion, and movement at a cellular and molecular level.

Paper Analysis:

Human physiology is one of the most highly respected units in biology with regards to the NEET exam. This is because of the fact that it holds a whopping 12% weightage in the NEET exam. So this unit is not the one to be taken lightly. Furthermore, the concepts that are included in this unit are connected to human anatomy, genetics, and reproduction as well.

The following are the important topics under this unit:

  • Chemical Coordination and integration
  • Body fluids and circulation
  • Breathing and exchange of gases
  • Excretion
  • Digestion and absorption.

Tips and Tricks:

This unit is also considered to be one of the happy go lucky units as it does not demand to be mugged up and is also interesting in the sense that you get to know a lot about the functioning and constituents of the organ systems of our body and there are major connections within the chapters of this unit.

  • Start by building up a strong foundation of the unit by focussing on the NCERT book.
  • Do not try to just mug up the lines.
  • Try to establish a firm understanding of the topics for a retaining longer period of memory.
  • Solve questions from the previous years’ NEET exams.
  • Keep in touch with concepts and revise from time to time.

Unit-5: Reproduction


Reproduction is the formation of new individuals of their own kind by living organisms. The Male Reproductive System consists of Testes, Scrotum, Urethra and other parts while the Female Reproductive System consists of Ovaries, Oviducts, Uterus and Vagina. Embryos are developed during reproduction passing through various phases such as Gametogenesis, Spermatogenesis, etc.

Chapter Analysis:

Very few questions have been asked from this chapter in the past 11 years with only 9 questions being asked. Although no question was asked from this chapter in the previous chapter, the paper in 2018 had 3 questions being asked making it an instant game changer. Same goes for 2013 when the paper had 3 questions after a appearance drought of 4 years. With the trend, we can expect 0 or 1 question from this chapter. The below given graph illustrates the number of questions asked from this chapter in the previous years:

Year 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009
Questions 0 3 0 0 0 0 3 1 1 0 1

The important topics to be covered from this chapter are:
• Male and Female Reproductive Systems
• Microscopic Anatomy of Testis and Ovary
• Gametogenesis – Spermatogenesis & Oogenesis
• Menstrual Cycle
• Fertilization
• Embryo Development up to Blastocyst Formation
• Implantation
• Pregnancy and Placenta Formation
• Parturition
• Lactation

Unit-6: Evolution


Evolutionary biology is the study of history of life forms on the Earth. To understand the evolution in flora and fauna over a period of millions of years on the earth, we must understand the origin of the beginning with the evolution of the earth, of stars, and the universe itself. Origin of life is believed to be a unique event in the history of universe. The Big Bang Theory attempts to explain to us the again of universe.

Chapter Analysis:

A lot of questions have been asked in the past two papers from this chapter with 4 in the later one and 3 in the former one. However, in 2017, no questions were asked. Also, in 2013 and 2012, 4 questions were asked in both the year. A total of 26 questions were asked in the past 11 years. So, we can atleast expect 2-4 questions in the coming years.
The below given graph illustrates the number of questions asked from this chapter in the previous years:

Year 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009
Number 1 1 1 4 4 2 1 3 0 3 4

The important topics to cover from this chapter are:
• Biological Evolution and Evidences for Biological Evolution
• Darwin’s Contribution
• Mechanisms of Evolution – Variation and Natural Selection with examples and types of natural selection.
• Gene Flow and Genetic Drift
• Hardy-Weinberg’s Principle

Unit-7: Microbes in Human Welfare


Microbes are beneficial as well as detrimental to the welfare of human beings. Microbes are utilized in many ways for human beings. These microscopic organisms produce half the oxygen in the world. Many types of fungus and other microbes release enzymes that digest dead stuff. They are more than half of the living biomass on the planet. In human body, 9 out of 10 cells are microbes. Microbes are everywhere on our body, in homes, far below the earth’s surface and up to the atmosphere, in cold, cool, warm and hot and very hot places, and even in places without oxygen. Microorganisms always live in water. They can eat all sorts of things, including oil, rocks, dead and living plants and animals.

Chapter Analysis:

The pattern in the number of questions asked in NEET from Microbes is a really uneven one and there have been regular rise and fall in the number of questions asked. All in all, a total of 27 questions have been asked in the past 11 years. However, the last year saw an abrupt increase in the number of questions being asked with 6 questions. Also, in the year of 2012, an enormous 7 questions were asked. However, on other side, the number of questions in the other years have remained 3, limiting to 0 in 2015 and 2009. Hence, making a wild guess, we can estimate 2-3 question being asked in the years to follow.
The following bar-graph depicts the variation of number of questions being asked:

The important topics to cover in Microbes are:
• Microbes in Household
• Microbes in Sewage Treatment
• Microbes used in production of Biogas and Biofertilizers

Tips and Tricks:

Since there has been an irregularity in the number of questions appearing in the paper from Microbes, it is best to keep this chapter to your strength as this chapter can be the deal-breaker in one of the years to follow. The following points might help the students in putting this chapter in their good books:
1. Reading NCERT is a must for this topic. Here is the link to NCERT PDF version of the topic:
2. Making Flash Cards will be beneficial as this chapter will not require much revision as students must have been well versed in this topic from their early days.
3. The past year questions must be solved along with the questions available at the end of the chapter in NCERT.
4. The summary given at the end of NCERT must be given proper reading.
5. Practice a large number of questions from this topic and leave no stones unturned to make this chapter one of your strengths.

Unit-8: Biotechnology


It is very fascinating how technology keeps evolving and helping humankind in several ways. Similarly, biological knowledge and resources have also been researched and developed by scientists to add more value and convenience to human life. Biotechnology has aided our lives with improvement in health and food production. In the following chapters of this unit, you will learn about the basic underlying principles, processes, and applications of Biotechnology, and how it has helped humankind.

Paper Analysis:

In the NEET exams that were conducted previously, this unit has mostly maintained an approximate weightage of 7%. While the number does not look like a big figure, it is certainly not insignificant. The questions that have appeared from this unit in the exam have always been based on the procedures and practical applications. Hence, this is yet another unit that requires a deep understanding of concepts instead of mugging up lines.


The following are the important topics under this unit:

  • Principles and processes of biotechnology
  • Applications of biotechnology

Tips and Tricks:

As mentioned above, the questions appearing from this unit are based on the procedures of biotechnology and its practical applications. So this unit has to be understood in great detail and not to be mugged up.

  • Read the class 12th NCERT book thoroughly for a strong foundation.
  • Focus on understanding all the concepts
  • Do not try to memorize.
  • Co-relate the applications in practical and current situations.
  • Solve questions from previous year question papers
  • Make sure to revise from summarised notes once in a while.

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