Class 12  Biology  Olympiad Exam.

NSO level 2 previous year papers class 12 | Online Olympiad Books | NSO class 12 sample papers | NSO level 2 class 12

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NCERT Solutions for Class 12 Biology

Read Notes and Videos,Practice,Mock Tests  for Class 12 Biology

Practice questions and Solutions for Class 12

Biology is one of the vital subjects in Science stream and it is also of very much importance while preparing for various competitive exams and hence it is essential to prepare it from the very beginning. Understanding the concepts and applying them in the provided situation can improvise your learning as well as knowledge ability.

Unfortunately, many students find it difficult because of no interest or lack of better knowledge to comprehend.  Biology is really a difficult subject but very interesting when comprehended well and practice with easy to hard problems and students find it difficult because most of them do not have their basics clear for the subject. Lack of sufficient practice tool is a major reason why solving Mathematical problems seems a tough nut to crack.

School Connect Online students are not only solving and understanding questions from Biology from NCERT or Syllabus but also they are solving questions to practice Biology Olympiad this helps students to become expert

To help you with this, we have learning notes and videos, Practice questions for  NCERT, NEET, with Solutions for Class 12 Biology.

Practice Solutions for Class 12 Biology

NCERT solutions of Class 12 Biology includes solutions of all questions and more to help and support practice with more relevant and important questions. These solutions have been provided and prepared by the most experienced teachers and important resources. A very simple approach has been followed while solving the questions and designing the NCERT Solutions for Class 12 Biology. Students will find it extremely easy to understand the problems and how to go about solving them.

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NEET Paper Analysis of Last 10 years for Biology

NEET Exam, conducted by CBSE was introduced in lieu of the various state level and national level medical entrance exams. It will be conducted for admission into MBBS/BDS courses this year as well.

The number of questions and the difficulty level varies for every section. This article provides you an analysis of the Biology section as observed in the question papers of last 10 years.

Biology Trend Analysis for NEET

Candidates must prepare for Biology from the NCERT books. It is advisable to practice as many NEET Question Papers as possible. This acquaints you with the exam pattern for NEET and the type of questions that are asked in the exam. It is imperative to be thorough with basic concepts to score well in this section. You can expect a range of theoretical and application based questions in this section; most of which are directly picked up from the NCERT Textbooks. 

The NEET paper analysis of last 10 years shows that the question paper for Biology has maximum number of questions from Principles of Inheritance and Variation (67 questions). Molecular basis of Inheritance and Morphology of Flowering Plants are also included in the list of important chapters for NEET. Other important topics include Animal Kingdom, Cell, and Human Health and Disease.

Candidates are advised to refer to help books and online practice papers with in depth explanation of basic concepts. They can also prepare for these topics by solving online mock tests. Acquiring good study material is essential to ace the exam.

Percentage Distribution of Questions

Candidates are questioned from chapters and topics studied in class XI and XII. After analyzing the weightage of questions from class XI and XII, it has emerged that questions from class XI have more weightage than Class XII chapters. Therefore, Class XI CBSE syllabus must be the priority of the candidates while preparing for Biology.

The exam also includes High Order Thinking Skills (HOTS) questions from various important topics of class XI.

Important Biology Topics in NEET

Biology for a medical entrance is mainly Zoology & Botany. The following table shows topic wise weightage of the Question paper of NEET 2018. It can be observed that Biological classification, enjoying a vast portion of the syllabus occupied 9 of the total 90 questions asked. There are topics which were having just one question such as digestion & absorption, Transportation in plants etc. But, these were all scoring questions which can’t be ignored based on just their weightage in NEET 2018. Everything said & done biology of NEET 2018 will throw questions from the following topics with a slight change in their weightage.

BOTANY – Weightage of various NEET Topics in Past Year’s Question Papers

ZOOLOGY – Weightage of various NEET Topics in Past Year’s Question Papers

Principles of Inheritance and Variation

It is one of the most important topics of Class XII syllabus.The weightage of questions from this chapter has decreased over the years. However, the level of difficulty has increased over the years making it an important chapter. There are various questions from genetic disorders (chromosomal and mendal), mutation, monohybrid and di-hybrid cross, dominance, alleles, linkage and recombination, sex determination and pedigree analysis.

Molecular Basis of Inheritance

This is a topic from Genetics and Evolution which includes topics like transfer of genes and its manifestation in the offspring. The important concepts that candidates must focus on for scoring well in this section are- DNA as a genetic material, Griffith experiment, RNA, Replication, Transcription, Genetic Coding, Translation, Gene Expression, Human Genome Project and DNA Finger Printing.

Morphology of Flowering Plants

Another important topic for NEET from Class XI CBSE syllabus, it is a part of Structural Organization in Plants. As per the paper analysis, questions from this topic are quite easy. Important topics from this section include Inflorescence, Fruit, Root and Leaves, Seed, and Semi-technical description and families.

Animal Kingdom and Cell: Unit of Life

The inference drawn after analyzing previous years’ question papers is that these chapters have similar weightage or number of questions in the Biology section of NEET. Overall, there have been 47 questions from these chapters over a span of 10 years. Since this chapter is from zoology, the questions are of moderate difficulty level. This section requires candidates to memorize the level of organization and classification from Animal Kingdom.

Cell is another important chapter from which candidates can expect several questions. The important topics include: Endoplasmic Reticulum, Golgi Apparatus, Lysosome, Vacuoles, Mitochondria, Plastids, Ribosomes, Cytoskeleton and Nucleus.

Reproduction in Humans and in Flowering Plants

In the past decade, there has not been much variation in the number of questions asked from this section. The important topics from Sexual Reproduction in Flowering Plants are Stamen, Microsporangium, Pollen Grains, Transverse Section of Anther, Stages of Microscope Maturing, Pistil, Mega Sporangium, Pollination, Double Fertilization, Endosperm, Seed, Apomixes and Poly-Embryo.

The important topics from Human Reproduction are Gametogenesis, Menstrual Cycle, Fertilization, Embryonic Development, Parturition and Lactation. The difficulty level of questions range from moderate to difficult. All the diagrams given in NCERT books are extremely important for NEET since most of the questions are based on them. 

Tips and Tricks to learn Biology

• Attempt as many conceptual questions on those derivations as you can. This will give you a better understanding of the subject.
• Look for new questions on similar context from previous year’s question papers, sample papers and other model test papers.
• Always time yourself while solving sample papers as it will help you better manage time during the exam.

• Solve as many class 12 sample papers you can, but try to solve at least 3-4 completely. Practice past year question papers & model test papers.
• Time management is a must; take out time for re-creation as well along side preparation.
• Try and finish all the topics and questions in the NCERT books.CBSE board questions are majorly based on the question in this book only.

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Important Key Terms -

Science Olympiad level 2 class 12

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