12th Biology Study Materials 2025 (NEW)

Q: What’s the fastest revision plan before the board exam? ⚡

Focus first on one-page summary sheets and one-mark banks, practise 5–6 labelled diagrams, and finish 1–2 full model papers with answer keys. Use mnemonics for complex cycles.

🧬 Download free 12th Biology study materials — Samacheer Kalvi aligned Plus Two Biology PDFs with unit-wise chapter summaries, high-resolution diagrams & flowcharts, model question papers, one-mark banks, and practical/viva guides tailored for TN Board exam prep.

📚 What this page offers

Curated 12th Biology notes for both Bio-Botany and Bio-Zoology: lesson-wise PDFs, downloadable diagram packs (labelled images & flowcharts), concise summary sheets, unit model papers, and compiled previous-year question collections — perfect for quick revision and classroom use.

🧾 Downloadable resources & formats

Available downloads include: Unit 1–8 study PDFs, high-quality labelled diagrams (cell, tissues, anatomy charts), practical record formats, slide/PPT summaries, one-mark question banks with answer keys, and timed model papers (Quarterly / Half-Yearly / Revision / Public). Use the preview & download links on the Aspirants page to save files for offline study.

🔎 How to use these materials for higher scores

1. Start with unit summary sheets and memorise labelled diagrams.
2. Practice one-mark & two-mark items daily from the one-mark bank.
3. Attempt weekly unit model papers and monthly full-portion mocks under exam conditions.
4. Revise practical steps and viva Q & A from the provided practical guides.

🧬 Key features & high-value content

High-resolution diagrams with labels for quick sketch practice.
Mnemonics & flowcharts for complex cycles and processes (e.g., Krebs cycle, meiosis).
Model question papers mapped to TN Board patterns with answer keys.
Practical viva sheets and experiment record templates for internal assessment.
Topicwise one-mark banks for rapid recall before exams.

🧑‍🏫 Contributors & how to share resources

Materials are teacher-contributed and curated by the Aspirants team. To submit your 12th Biology PDFs, corrected notes or high-quality diagrams, email aspirants.in@gmail.com (include contributor name & medium). If a download link is broken, comment on the post or email the team for a reupload.

Bookmark this page using the keyboard shortcut Ctrl + D to refer to this page and check your results and other exam-related updates. All the Best!

12th Biology - Study Mateials 2025 (New) | Samacheer Kalvi

12th Biology - Unit 1 Study Materials | Way to Success Guide - (English Medium) - Preview & Download

12th Bio-Botany - Sura Guide | Sura Publications - (English Medium) - Preview & Download

12th Biology - Nutrition & Dietetics Study Materials | Mr. V. Antony Arockiya Selvam - (English Medium) - Preview & Download

12th Bio-Zoology - Diagrams Study Materials | Mr. G. Thirumoorthy - (English Medium) - Preview & Download

12th Bio-Botany - Chapter 1 Book Back Questions | Mr. P. Selva Kumar - (English Medium) - Preview & Download

12th Bio-Botany - Book Back One Words | Mr. C. Kishore Kumar - (Tamil & English Medium) - Preview & Download

12th Bio-Zoology - Sura Guide | Sura Publications - (English Medium) - Preview & Download

12th Bio-Zoology - Chapter 1 Study Material | Mr. P. Selvakumar - (English Medium) - Preview & Download

12th Bio-Zoology - Full Portion Model Question Papers 6 Sets | Dr. R. Saravanan - (English Medium) - Preview & Download

12th Bio-Zoology - Chapter 1-5 Unit Wise Question Papers | Dr. R. Saravanan - (English Medium) - Preview & Download

12th Bio-Zoology - Chapter 6-12 Unit Wise Question Papers | Dr. R. Saravanan - (English Medium) - Preview & Download

12th Bio-Zoology - Study Materials | Rana Sakthi Durga - (English Medium) - Preview & Download

12th Bio-Zoology - All Chapters Unit wise Model Question Papers (24 Sets) | Mr. R. Saravanan - (English Medium) - Preview & Download

12th Bio-Zoology - Chapter 2-5 Study Materials | Dr. R. Saravanan - (English Medium) - Preview & Download

12th Bio-Botany & Botany - Important Questions | Mr. K. Bala Subramaniyam - (English Medium) - Preview & Download

12th Bio-Zoology - Study Materials | Mr. P. Palanivelu - (English Medium) - Preview & Download

12th Biology - First Half Portion Test Paper | Mr. S. Dinesh Babu - (English Medium) - Preview & Download

12th Biology - Answer Key for One Mark Questions | Mr. S. Thiyaga Rajan - (English Medium) - Preview & Download

12th Biology - Solution for One Mark Questions | Mr. S. Thiyaga Rajan - (English Medium) - Preview & Download

12th Biology - Comprehensive Study Tool | Mr. Mithun BIO - (English Medium) - Preview & Download

12th Biology - One Mark Questions - Study Materials | Mr.M. Siva Kumar - (English Medium) - Preview & Download

12th Bio-Zoology - Study Materials | Mr. S. Thiyagarajan - (English Medium) - Preview & Download

12th Biology - Study Materials | Mr. F. Joseph Vincent - (English Medium) - Preview & Download

12th Biology - Diagram Practice Study Materials | Mr. S. Thiyagarajan - (English Medium) - Preview & Download

12th Bio-Zoology - Table to Revise Study Materials | Mr. S. Thiyagarajan - (English Medium) - Preview & Download

12th Bio-Botany - Chapter wise Questions | Mr. Gopalakrishnan Raman - (English Medium) - Preview & Download

12th Botany - Cyclic Test 2 Model Question Paper | Kamalammal - (English Medium) - Preview & Download

12th Bio-Botany - Unit wise Important Questions | Mr. D. Rajamani - (English Medium) - Preview & Download

12th Bio-Botany - Unit 10 Book Back Q&A | Mr. C. Kishore Kumar - (English Medium) - Preview & Download

12th Bio-Zoology - Chapter wise Questions | Mr. Gopalakrishnan Raman - (English Medium) - Preview & Download

12th Bio-Zoology - Diagrams Study Material | Mr. V. Antony - (English Medium) - Preview & Download

12th Biology - Cyclic Test Question Papers | Kamalammal - (English Medium) - Preview & Download

12th Biology - Chapter 9 Study Material | Mr. C. Karunakaran - (English Medium) - Preview & Download

12th Bio-Zoology - One Mark Questions | Mrs. M. Kalaiselvi - (English Medium) - Preview & Download

12th Biology - Glossary Study Material | Mrs. M. Kalaiselvi - (English Medium) - Preview & Download

12th Bio-Botany - Unit 6,7 Model Question Paper | Mr. S. Madasamy - (English Medium) - Preview & Download

12th Biology - Unit Test Question Paper 1 | Mr. E. Tamil Selvan - (English Medium) - Preview & Download

12th Biology - Unit Test Question Paper 2 with Answer Key | Mr. E. Tamil Selvan - (English Medium) - Preview & Download

12th Bio-Botany - Unit 7 Study Materials | Mr. A. Vinoth Kumar - (English Medium) - Preview & Download

12th Zoology - Full Study Material | Mr. Ayyanar - (English Medium) - Preview & Download

12th Bio-Botany - Unit 7 Study Material | Mr. A. Vinoth Kumar - (English Medium) - Preview & Download

12th Bio-Botany - Sura Guide ( Sample ) - (English Medium) - Preview & Download

12th Bio-Zoology - Sura Guide ( Sample ) - (English Medium) - Preview & Download

12th Zoology - Important 2,3,5 Marks Creative Questions | Mr. Ayyanar - (English Medium) - Preview & Download

12th Bio-Botany - Unit 1 Model Question Papers | Mr. K. Aravindharaj - (English Medium) - Preview & Download

12th Bio-Botany - Lesson 1 Study Materials | Mr. V. Antony - (English Medium) - Preview & Download

12th Bio-Botany - Do you know study material | Mr. C. Kishore Kumar - (English Medium) - Preview & Download

12th Bio-Botany - Book Back Answers | Mr. Kishore Kumar - (English Medium) - Preview & Download

12th Bio-Zoology - Lesson 1,2,3 Study Material | Mr. M. Murugan - (English Medium) - Preview & Download

12th Bio-Zoology - Lesson 1 Study Materials | Mr. V. Antony - (English Medium) - Preview & Download

12th Bio-Zoology - Book Back One Mark Questions | Mr. R. Ayyanar - (English Medium) - Preview & Download

12th Bio-Zoology - Unit 1 - 2M & 3M Study Material | Mr. R. Ayyanar - (English Medium) - Preview & Download

12th Bio-Zoology - Unit 1 Study Material | Mr. Selvamurugan - (English Medium) - Preview & Download

12th Zoology - Unit 3 Creative Questions | Mr. Ayyanar - (English Medium) - Preview & Download

12th Zoology - Unit 2 Chapter 4 Study Material | Mr. Ayyanar - (English Medium) - Preview & Download

12th Zoology - Lesson 1 Study Materials | Mr. R. Ayyanar - (English Medium) - Preview & Download

12th Bio-Botany - Chapter 5, 10 Study Materials | Mr. Udhaya Kumar - (English Medium) - Preview & Download

12th Bio-Botany - Important Diagrams | Way to Success - (English Medium) - Preview & Download

12th Bio-Botany - Unit 6 Study Materials | Way to Success - (Tamil & English Medium) - Preview & Download

12th Bio-Botany - Unit 1 Study Materials | Way to Success - (English Medium) - Preview & Download

12th Bio-Botany - Important Study Materials | Way to Success - (Tamil Medium) - Preview & Download

12th Bio-Zoology - Important Study Materials | Way to Success - (Tamil Medium) - Preview & Download

12th Biology - Sample Study Materials | Sura Guide - (English Medium) - Preview & Download

12th Bio-Botany - Book Back One Mark Questions | Mr. C Kishore Kumar - (English Medium) - Preview & Download

12th Biology - Important Question Bank Study Materials | Mrs. S. Durga - (English Medium) - Preview & Download

12th Bio-Zoology - Unit 1 & 2 Book Back One Mark Questions Answers | Mrs. S. Durga - (English Medium) - Preview & Download

12th Bio-Zoology - Achievement Test 1 - Question Paper | Mrs. O. Gomathi - (English Medium) - Preview & Download

12th Bio-Zoology - Achievement Test 2 - Question Paper | Mrs. O. Gomathi - (English Medium) - Preview & Download

12th Biology - Model Public Exam - Question Paper | Ameer Tuition Centre - (English Medium) - Preview & Download

12th Bio-Botany - 2,3,5 Mark Important Questions | Mr. Prince - (English Medium) - Preview & Download

12th Biology - Important 50 Questions - (Tamil & English Medium) - Preview & Download

12th Biology - Top 200 Questions - (Tamil & English Medium) - Preview & Download

12th Biology - Study Material | Mr. A. Mohammed Ali - (English Medium) - Preview & Download

12th Biology - Compulsory Previous Year - Question Paper | Mr. SS. Prithvi - (English Medium) - Preview & Download

12th Bio-Zoology - Chapter 7 to 12 - Book Back One Mark Questions | Mr. Mani - (English Medium) - Preview & Download

12th Biology - 2nd Midterm - Important Questions | Mr. Manikandan - (English Medium) - Preview & Download

12th Bio-Zoology - Second Half Portion Exam 2024 - Question Paper | Mr. C. Mani - (English Medium) - Preview & Download

12th Bio-Zoology - Chapter 1 to 6 - Book Back 1 Mark Questions | Mr. C. Mani - (English Medium) - Preview & Download

12th Bio-Botany - Public Exams - Questions With Answers | Mr. G. Sathiyamoorthi - (English Medium) - Preview & Download

12th Bio-Zoology - Chapter 5 Molecular Genetics Part 1 | Mrs. Y. Saranya - (English Medium) - Preview & Download

12th Bio-Botany - Unit Wise - Public Questions With Answers | Mr. G. Murthy - (English Medium) - Preview & Download

12th Biology - Book Back One Mark Questions | Mr. S. Velu - (English Medium) - Preview & Download

12th Bio-Zoology - Quarterly Exam - Important Questions | Marutham Academy - (Tamil Medium) - Preview & Download

12th Bio-Botany - Important Questions | Marutham Academy - (English Medium) - Preview & Download

12th Bio-Botany - Unit 1 - Important Question Paper | Marutham Academy - (English Medium) - Preview & Download

12th Bio-Zoology - Excel Guide - (English Medium) - Preview & Download

12th Bio-Botany - Excel Guide - (English Medium) - Preview & Download

12th Biology - Full Study Material | Mr. A. Mohammed Ali - (English Medium) - Preview & Download

12th Bio-Zoology - Public Exam 2022 - Question Paper With Answer Key | Surabook - (English Medium) - Preview & Download

12th Biology - Chapter 15 - Biodiversity And Conservation - Book Back Questions With Answer Key | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 15 - Section C And D - Book Back Questions With Answer Key | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 16 - Section A - Book Back Questions With Answer Key | Mr. A. Moorthy - Preview & Download

12th Biology - Chapter 16 - Section C And D - Book Back Questions With Answer Key | Mr. A. Moorthy - Preview & Download

12th Biology - Chapter 8 - Section A - 1 Mark Questions With Answer Key | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 8 - Section C And D - 1 Mark Questions With Answer Key | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 9 - Section A - 1 Mark Questions With Answer Key | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 9 - Section C And D - 1 Mark Questions With Answer Key | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 10 - Section A - 1 Mark Questions With Answer key | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 11 - 1 Mark Questions With Answer Key | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 11 - Section C And D - 1 Mark Questions With Answer Key | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 13 - Section A - 1 Mark Questions With Answer Key | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 13 - Section C And D - 1 Mark Questions With Answer key | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Section C And D - Previous Exam 1 Mark Questions With Answer Key | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Section A - Question Paper With Answer | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 1 - Question Paper With Answer | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 2 - Section C And D - Question Paper With Answer | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 2 - Question Paper With Answer | Mr. A. Moorthy - Preview & Download

12th Biology - Chapter 3 - Question Paper With Answer | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 4 - Section C And D - Question Paper With Answer | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 4 - Question Paper With Answer | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 5 - Section A - Question Paper With Answer | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 5 - Section C And D - Question Paper With Answer | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 6 - Section A - Question Paper With Answer | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 6 - Section C And D - Question Paper With Answer | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 7 - Section A - Question Paper With Answer | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Biology - Chapter 7 - Section C And D - Question Paper With Answer | Mr. A. Moorthy - (English Medium) - Preview & Download

12th Botany - Public Exam 2022 - Answer Key | Mr. M. Mathan - (English Medium) - Preview & Download

12th Bio-Zoology - Chapter 1 - Study Material | Mr. C. Mani - (English Medium) - Preview & Download

12th Bio-Botany - Book Back 1 Mark - Question Paper | Mr. S. Murugesan - (English Medium) - Preview & Download

12th Bio-Zoology - 1st Midterm Test - Answer Key | Mr. Manikandan - (English Medium) - Preview & Download

12th Bio-Botany - Chapter - 1 Book Back Questions With Answer | Mr. Kishore Kumar - (English Medium) - Preview & Download

12th Biology - Model Question Paper | Mrs. M. Sankareswari - (English Medium) - Preview & Download

12th Biology - Full Portion Test 1 - Question Paper | Mr. Mohamed Fazil - (English Medium) - Preview & Download

12th Biology - Model Question Paper 1 | Mrs. M. Sankareswari - (English Medium) - Preview & Download

12th Biology - Model Question Paper 2 | Mrs. M. Sankareswari - (English Medium) - Preview & Download

12th Biology - Model Question Paper 3 | Mrs. M. Sankareswari - (English Medium) - Preview & Download

12th Biology - 1 And 5 Mark Test 1 - Model Question Paper | Mrs. M. Sankareswari - (English Medium) - Preview & Download

12th Biology - Set 2 - Model Question Paper | Mrs. M. Sankareswari - (English Medium) - Preview & Download

12th Biology - Set 3 - Model Question Paper | Mrs. M. Sankareswari - (English Medium) - Preview & Download

12th Biology - Set 3 - Model Question Paper 1 | Mrs. M. Sankareswari - (English Medium) - Preview & Download

12th Biology - Set 3 - Model Question Paper 2 | Mrs. M. Sankareswari - (English Medium) - Preview & Download

12th Biology - Set 4 - Model Question Paper | Mrs. M. Sankareswari - (English Medium) - Preview & Download

12th Biology - Set 4 - Model Question Paper 1 | Mrs. M. Sankareswari - (English Medium) - Preview & Download

12th Biology - Set 4 - Model Question Paper 2 | Mrs. M. Sankareswari - (English Medium) - Preview & Download

12th Biology - Set 5 - Model Question Paper | Mrs. M. Sankareswari - (English Medium) - Preview & Download

12th Biology - Set 7 - Model Question Paper | Mrs. M. Sankareswari - (English Medium) - Preview & Download

12th Bio-Zoology - Chapter 8 - Study Material | Mr. C. Karunakaran - (English Medium) - Preview & Download

12th Biology - Model Question Paper | Mr. S. Boominthan - (English Medium) - Preview & Download

12th Botany - Inside Questions 2024 | Marutham Academy - (English Medium) - Preview & Download

12th Biology - Unit Test 1 Model Question Paper | Mr. Yaseen - (English Medium) - Preview & Download

12th Botany - Important Questions | Mrs. O. Gomathi - (English Medium) - Preview & Download

12th Biology - Study Materials | Mr. Marimuthu - (English Medium) - Preview & Download

12th Biology - Blaster Classification of Questions | Mr. SS.Prithvi - (English Medium) - Preview & Download

12th Biology - Important Classifications of Questions | Mr. SS.Prithvi - (English Medium) - Preview & Download

12th Biology - Important New Questions 2024 | Mr.A.Anbu - (English Medium) - Preview & Download

12th Bio-Zoology - Do you know 2 mark Questions | Mr. R. Sivakumar - (English Medium) - Preview & Download

12th Bio-Zoology - Do you know 1 mark Questions | Mr. R. Sivakumar - (English Medium) - Preview & Download

12th Bio-Zoology - Public Exam Questions | Mr. A. Mohammed Ali - (English Medium) - Preview & Download

12th Bio-Botany - Public Exam Questions Unit wise | Mr. G. Murthy - (English Medium) - Preview & Download

12th Bio-Botany - Study Materials | Mrs. Yasmeeen - (English Medium) - Preview & Download

12th Biology - 1Mark Question and Answer Key | Mr. S.Thiyagarajan - (English Medium) - Preview & Download

12th Biology - C1 Reproduction in Organisms Question Paper | Mr. S.Thiyagarajan - (English Medium) - Preview & Download

12th Biology - C2 Human Reproduction Question Paper | Mr. S.Thiyagarajan - (English Medium) - Preview & Download

12th Biology - C3 Reproductive Health Question Paper | Mr. S.Thiyagarajan - (English Medium) - Preview & Download

12th Biology - C4 Principle Of Inheritance Question Paper | Mr. S.Thiyagarajan - (English Medium) - Preview & Download

12th Biology - C5 Molecular Basis Of Inheritance Question Paper | Mr. S.Thiyagarajan - (English Medium) - Preview & Download

12th Biology - C6 Evolution Question Paper | Mr. S.Thiyagarajan - (English Medium) - Preview & Download

12th Biology - C7 Human Health And Disease Question Paper | Mr. S.Thiyagarajan - (English Medium) - Preview & Download

12th Biology - C8 Microbes in human Welfare Question Paper | Mr. S.Thiyagarajan - (English Medium) - Preview & Download

12th Biology - C9 Applications Of Biotechnology Question Paper | Mr. S.Thiyagarajan - (English Medium) - Preview & Download

12th Biology - C10 Organisms And Population Question Paper | Mr. S.Thiyagarajan - (English Medium) - Preview & Download

12th Biology - C11 Biodiversity And its Conservation Question Paper | Mr. S.Thiyagarajan - (English Medium) - Preview & Download

12th Biology - C12 Environmental Issues Question Paper | Mr. S.Thiyagarajan - (English Medium) - Preview & Download

12th Biology - Important 2,3,5 Mark Questions | Mr. S. Thiyagarajan - (English Medium) - Preview & Download

12th Bio-Zoology - Important Questions | Mr. E. Prabu - (English Medium) - Preview & Download

12th Biology - Sample Guide | Excel - (English Medium) - Preview & Download

12th Bio-Botany - Full Study Materials | Mr. T. Prabhu - (English Medium) - Preview & Download

12th Bio-Zoology - Important Questions | Dr. V. Chennaiyan - (English Medium) - Preview & Download

12th Biology - Important 2,3,5 Mark Questions | Mr. S. Thiyagarajan - (English Medium) - Preview & Download

12th Zoology - Study Materials | Mr. L. Antonisamy - (English Medium) - Preview & Download

12th Bio-Botany - Important Questions to Public Exam | Mr. S. Ajith Kumar - (English Medium) - Preview & Download

12th Bio-Zoology - Important Questions | Mr. Prabu - (English Medium) - Preview & Download

12th Biology - Lesson wise 1 Mark Questions | Mr. B. Veerapandiyan - (English Medium) - Preview & Download

12th Botany - Study Materials | Mr. L. Antonisamy - (English Medium) - Preview & Download

12th Biology - Chapter wise Questions 6-8 | Mr. V. Ramasamy - (English Medium) - Preview & Download

12th Bio-Zoology - One Marks Question Paper | Mr. N. Sekar - (English Medium) - Preview & Download

12th Biology - Important Questions | Mr. A. Anbu - (English Medium) - Preview & Download

12th Bio-Botany - Book Back 1 Marks Answer Keys | Mr. A. Anbu - (English Medium) - Preview & Download

12th Bio-Botany - 1 Marks Full Portion Question Paper | Mr . S Thayagarajan - (English Medium) - Preview & Download

12th Bio-Zoology - Important 5 Mark Questions | Excel - (English Medium) - Preview & Download

12th Bio-Botany - Important Questions | Mr. A. Anbu - (English Medium) - Preview & Download

12th Botany - Important 5 Mark Questions | Sun TC - (English Medium) - Preview & Download

12th Bio-Botany - Book Back Questions | Mr. A. Mohammed Ali - (English Medium) - Preview & Download

12th Bio-Zoology - Full Study Materials | Mrs. Ranasakthi Durga - (English Medium) - Preview & Download

12th Bio-Zoology - Slip Test 1 Model Question Paper | Mr. D. Sakthivel - (English Medium) - Preview & Download

12th / +2 / Plus Two - Bio Botany Study Materials (Old)

Latest 12th Bio Botany Study Materials - Book Back Answers | Mr. Kishore Kumar - (English Medium) - Click here to Download

Latest 12th Bio Botany Study Materials - Book Back Answers | Mr. Kishore Kumar - (Tamil Medium) - Click here to Download

Latest 12th Bio Botany Study Materials - Do you know study material | Mr. C. Kishore Kumar - (English Medium) - Click here to Download

Latest 12th Bio Botany Study Materials - Unit 1 (Part 3) Study Material | Mr. S. Murugesan - (Tamil Medium) - Click here to Download

Latest 12th Bio Botany Study Materials - Lesson 1 Study Materials | Mr. V. Antony - (English Medium) - Click here to Download

Latest 12th Bio Botany Study Materials - Lesson 1 Study Material | Mr. S. Murugesasn - (Tamil Medium) - Click here to Download

Latest 12th Bio Botany Study Materials - Chapter 2 Study Material | Mr. B. Balaji - (English Medium) - Click here to Download

Latest 12th Bio Botany Study Materials - Unit 1 Model Question Papers | Mr. K. Aravindharaj - (English Medium) - Click here to Download

12th / +2 / Plus Two - Bio Zoology Study Materials

Latest 12th Bio Zoology Study Materials - Book Back One Mark Questions | Mr. R. Ayyanar - (English Medium) - Click here to Download

Latest 12th Bio Zoology Study Materials - Lesson 1 Study Materials | Mr. V. Antony - (English Medium) - Click here to Download

Latest 12th Bio Zoology Study Materials - Unit 1 - 2M & 3M Study Material | Mr. R. Ayyanar - (English Medium) - Click here to Download

Latest 12th Bio Zoology Study Materials - Unit 1 Study Material | Mr. Selvamurugan - (English Medium) - Click here to Download

12th / +2 / Plus Two - Zoology Study Materials

Latest 12th Zoology Study Materials - Full Study Material | Mr. Ayyanar - (English Medium) - Click here to Download

Latest 12th Zoology Study Materials - Unit 2 Chapter 4 Study Material | Mr. Ayyanar - (English Medium) - Click here to Download

Latest 12th Zoology Study Materials - Unit 3 Creative Questions | Mr. Ayyanar - (English Medium) - Click here to Download

❓ Frequently Asked Questions (FAQ)

📥 1. Where can I download the 12th Biology PDFs? 🧾

Use the preview / download links listed beside each resource on the Aspirants page to save unit-wise PDFs, diagram packs, model papers and practical guides for offline revision.

🧠 2. Are these notes aligned with the Samacheer Kalvi syllabus? ✅

Yes — all uploaded materials follow the latest Samacheer Kalvi / TN Board Plus Two Biology syllabus and reflect common public exam question styles.

✍️ 3. How should I practise labelled diagrams effectively? 🖊️

Print diagram packs, practise free-hand sketches daily (timed 3–5 minute sketches), and memorize key labels with flashcards. Compare with the labelled PDF to self-correct.

🔬 4. Do the downloads include practical/viva guidance and record formats? 🧪

Yes — many downloads include practical procedure steps, expected observations, formatted record-sheet templates and common viva Q&A to prepare you for internal assessments.

⏱️ 5. What’s the fastest revision plan before the board exam? ⚡

Focus first on one-page summary sheets and one-mark banks, practise 5–6 labelled diagrams, and finish 1–2 full model papers with answer keys. Use mnemonics for complex cycles.

🔁 6. Can I contribute my own Biology notes or diagrams? ✉️

Absolutely — email clear, high-quality PDFs or editable files to aspirants.in@gmail.com. Good contributions are reviewed and published to help other students.

🚀 Ready to download?

Go to the top of the Aspirants page and click the Click here to Download links beside each listed 12th Biology resource to save PDFs, diagram packs and model papers. Best of luck with your Plus Two Biology preparation!