NEET 2027 Biology: Top 50 Most Expected Questions with Solutions – Download PDF

NEET 2027 Biology 50 Most Expected Questions with Solutions

Some Biology NEET important questions are given below for practise:

Ques 1: Which of the following is the correct unit of productivity in an ecosystem?

A. (KCal m⁻²) yr⁻¹

B. gm⁻²

C. KCal m⁻²

D. KCal m⁻³

Correct Answer: A

Explanation:

Productivity is measured as the rate of energy production per unit area per unit time, hence expressed as KCal m⁻² yr⁻¹.

Ques 2: The first occurrence of menstruation in females is known as:

A. Ovulation

B. Menopause

C. Menarche

D. Diapause

Correct Answer: C

Explanation:

Menarche marks the beginning of the menstrual cycle in females, indicating reproductive maturity.

Ques 3: Genes R and Y assort independently. If RRYY produces round yellow seeds and rryy produces wrinkled green seeds, what is the phenotypic ratio in the F₂ generation?

A. 9:7

B. 1:2:1

C. 3:1

D. 9:3:3:1

Correct Answer: D

Explanation:

This is a classic dihybrid cross showing independent assortment, resulting in a 9:3:3:1 phenotypic ratio.

Ques 4: What is the main function of spindle fibres during mitosis?

A. Regulate cell growth

B. Separate chromosomes

C. Synthesise DNA

D. Repair DNA

Correct Answer: B

Explanation:

Spindle fibres attach to centromeres and pull sister chromatids apart during cell division.

Ques 5: How many meiotic and mitotic divisions are required to form a mature female gametophyte from a megaspore mother cell in angiosperms?

A. No meiosis and 2 mitosis

B. 2 meiosis and 3 mitosis

C. 1 meiosis and 2 mitosis

D. 1 meiosis and 3 mitosis

Correct Answer: D

Explanation:

One meiosis produces four megaspores, followed by three mitotic divisions to form the embryo sac.

Ques 6: Which of the following statements about antibody structure is NOT correct?

A. Constant regions are at C-terminal

B. Two heavy and two light chains are present

C. Chains are linked by disulfide bonds

D. Antigen binding site is at C-terminal

Correct Answer: D

Explanation:

The antigen-binding site is located at the variable (N-terminal) region, not the C-terminal.

Ques 7: Assertion (A): Tapetum cells have dense cytoplasm and are often multinucleate. Reason (R): Multiple nuclei increase efficiency in nourishing developing pollen.

A. A false, R true

B. Both true, R explains A

C. Both true, R doesn’t explain A

D. A true, R false

Correct Answer: D

Explanation: Tapetum cells are multinucleate (true), but the reason is not the correct explanation.

Ques 8: In bryophytes, gemmae are involved in:

A. Gaseous exchange

B. Sexual reproduction

C. Asexual reproduction

D. Nutrient absorption

Correct Answer: C

Explanation: Gemmae are vegetative propagules that help in asexual reproduction.

Ques 9: Who proposed that the genetic code consists of triplet nucleotides?

A. Franklin Stahl

B. George Gamow

C. Francis Crick

D. Jacques Monod

Correct Answer: B

Explanation: George Gamow suggested that codons are made of three nucleotides.

Ques 10: Sweet potato (root) and potato (stem) represent which type of evolution?

A. Analogy, divergent

B. Analogy, convergent

C. Homology, divergent

D. Homology, convergent

Correct Answer: B

Explanation: They perform similar functions but have different origins, showing convergent evolution (analogy).

NEET 2027 Biology: Top 50 Most Expected Questions with Solutions PDF

Chapter-wise NEET Biology important questions PDF is an excellent resource for effective preparation. Rather than revising everything at the end, candidates need to solve these questions right after reading each chapter.

This PDF comprises the best questions with solutions according to previous years’ trends and NCERT topics. It will be helpful in regular practice, chapter-wise revision, assessment, and mock test preparations.

Advantages of NEET Biology Important Questions PDF

• Includes important biology topics of high weightage.

• Contains questions based on previous years’ trends.

• Develops the concepts of NCERT.

• Improves accuracy and concepts.

• Helps in identifying weaknesses.

• Enhances confidence with regular practice.

Why are NEET Biology 50 Important Questions Relevant?

Solving NEET Biology important questions is perhaps the most efficient method to study for NEET. The NEET Biology important questions are chosen based on trends of past years and NCERT-based concepts that appear often in NEET.

Get an Idea About the NEET Exam Pattern

Regularly solving questions helps students to know the latest NEET question pattern, difficulty level of questions, and the type of NEET questions that have appeared before.

Recognize High-Weightage Chapters

The repeated practice of questions allows students to identify high-weightage chapters. This helps them to prioritise important topics while covering the whole NEET syllabus.

Build Up Your Knowledge of NCERT Concepts

Almost all NEET Biology questions are either directly or indirectly based on NCERT. Practising the NEET important questions will make you understand your NCERT facts, figures, diagrams, examples, and important statements.

Increase Speed and Decrease Negative Marking

Regularly solving questions will increase your speed to answer NEET Biology questions while decreasing negative marking.

How to Make the Best Use of NEET Biology 50 Most Expected Questions

It is important that students analyse their work and revise concepts constantly to get the full advantage out of these questions.

Complete NCERT First

Students need to study all Biology chapters in NCERT books first before solving important questions. It will help them understand the concepts well.

Work on Chapter-wise Questions

Solve important questions right after completion of each chapter. It will further enhance concept understanding and retention power of students.

Error Notebook

Write down the details of the wrong answers, confusing topics, information from NCERT textbooks, and hard questions in a new notebook.

Revise NCERT Diagrams and Tables

There are many questions asked from NCERT-based diagrams, tables, flow charts, and examples. These need to be revised along with other chapters.

Revise Important Questions Regularly

Important questions must not be solved just once. They have to be revised again and again.

NEET Biology 2027 Preparation Plan: 6 Month Strategy with Important Questions

NEET Biology preparation is easy for those students who don’t prepare for the exams in the last minute. Rather, one should adopt a proper strategy of preparation to gain a good score and prepare concepts effectively. Here, the following 6-month strategy of NEET Biology preparation will be helpful to you.

Month 1: Develop NCERT Foundation

It is recommended that, first of all, you start by covering the entire NCERT syllabus of Biology chapter-wise. Try to focus on gaining concepts rather than memorising any information.

• Study every chapter of NCERT Biology.

• Highlight important lines, tables, diagrams, etc.

• Solve NEET Biology important questions chapter-wise after every chapter.

• Write short revision notes.

Month 2: Enhance Basic Concepts

When you understand the basics, start the revision and proceed further with the rest of the syllabus.

• Cover the rest of the chapters of NCERT.

• Practice PYQs and important questions chapter-wise.

• Keep revising NCERT diagrams and flowcharts.

• Keep an error book for difficult questions.

Month 3: Focus on High-weightage Chapters

Put more focus on those chapters which often feature in NEET and work on revising the earlier revised chapters.

• Revisions include chapters like Genetics, Human Physiology, Ecology, Biotechnology, and Plant Physiology.

• Do mixed sets of important Biology questions.

• Practice assertion and reason questions.

• Develop your skills in being precise through the analysis of mistakes you commit during practice.

Month 4: Focus on Speed and Precision

Apply your knowledge and develop time management skills.

• Solve chapter-wise test papers.

• Practice NEET biology previous year question papers.

• NCERT facts, examples, and diagrams revision.

Month 5: Revision and Practice

Revision and practice must be the key in this month.

• Resolution of important questions flagged in previous revision phases.

• Practice of complete Biology sections of practice exams.

• Updating and revision of the errors notebook.

Month 6: NEET 2027 Revision Month

The last month must be utilised in revision and building confidence rather than learning anything new.

• Chapter-wise revision of NCERT.

• NEET biology important questions and previous year papers.

• Attempting full practice tests under exam-like conditions.

• Revision of short notes and often tested concepts.

Mistakes You Must Avoid During NEET Biology Preparation

Students often tend to lose marks in Biology due to these common mistakes made during their preparation.

• Neglecting diagrams and tables from NCERT.

• Mugging up facts without understanding the concept.

• Leaving out past year questions.

• Failing to revise covered chapters.

• Solving questions without analysing their mistakes.

• Neglecting weaker topics until the last moment.

• Using multiple books instead of only NCERT book.

NEET 2027 Biology Top 50 Most Expected Questions with Solutions: How to score 340+

Consistency is the key to scoring well in Biology.

• Finish NCERT before moving on to any other book.

• Do important questions after each chapter.

• Revision of diagrams, flow charts and tables from NCERT is very important.

• Do previous year questions chapter-wise during your preparation.

• Give weekly NEET mocks in Biology.

• Maintain an error notebook and revise it.