Download official Tamil Nadu Class 12 (Plus Two) Biology (Botany & Zoology உயிரியல்) 2nd Mid Term Exam Question Papers and Verified Answer Keys PDF (2026–2027). For comprehensive chapter revision, access the official 12th Standard Biology Textbook PDF and browse the complete higher secondary collection via our Class 12 (Plus Two) Textbooks Hub. Strengthen your preparation for 2-mark, 3-mark, and 5-mark questions by utilizing curated 12th Biology Study Materials & Diagrams along with statewide district test papers compiled in our centralized Class 12 (Plus Two) 2nd Mid Term Master Portal.
தமிழ்நாடு 12-ஆம் வகுப்பு (+2) Biology (Botany & Zoology உயிரியல்) இரண்டாம் இடைப்பருவத் தேர்வுக்கான அசல் வினாத்தாள்கள் மற்றும் ஆசிரியர்களின் மாதிரி விடைக் குறிப்புகள் கீழே மாவட்ட வாரியாகத் தொகுக்கப்பட்டுள்ளன.
📋 TN 12TH Biology 2nd Mid Term 2026–2027: Quick Overview
📚 Quick Navigation — All 12TH 2nd Mid Term Subjects:
12th Tamil12th English12th Maths12th Physics12th Chemistry12th Biology ★12th Commerce12th Accountancy12th Economics
Visit the 12TH 2nd Mid Term Master Hub for complete class-level downloads and subject links.
📖 Prescribed October & November Syllabus Portions
- Bio-Botany: Recombinant DNA technology, PCR, Vector types, Micropropagation, Callus culture.
- Bio-Zoology: Central dogma, DNA replication, Genetic code, Operon model, Theories of evolution.
📝 Question Paper Pattern & Blueprint (50 Marks)
- Bio-Botany (25 Marks): MCQs (4), 2-Marks (3), 3-Marks (2), 5-Mark (1)
- Bio-Zoology (25 Marks): MCQs (4), 2-Marks (3), 3-Marks (2), 5-Mark (1)
- Total Marks: 50 Marks
📅 Tamil Nadu Class 12 (+2) 2nd Mid Term Exam Timetable 2026
Higher Secondary Second Mid-Term tests are conducted across all Tamil Nadu higher secondary schools in November according to the following schedule:
| Exam Session / Day | Subject (பாடம்) | Exam Timing | Max Marks |
|---|---|---|---|
| Day 1 | Part I: Language (Tamil / சிறப்புத் தமிழ்) | 10:00 AM – 11:30 AM | 50 |
| Day 2 | Part II: English (General English) | 10:00 AM – 11:30 AM | 50 |
| Day 3 | Part III: Mathematics / Zoology / Commerce | 10:00 AM – 11:30 AM | 50 |
| Day 4 | Part III: Physics / Economics / Computer Technology | 10:00 AM – 11:30 AM | 50 |
| Day 5 | Part III: Chemistry / Accountancy / Geography | 10:00 AM – 11:30 AM | 50 |
| Day 6 | Part III: Biology / Botany / Computer Science / History | 10:00 AM – 11:30 AM | 50 |
Note: Check the state schedule: TN 2nd Mid Term Exam Time Table PDF.
TN 12th Biology 2nd Mid Term District Question Papers & Answer Keys (2025, 2024, 2023, 2022) (24 Question Papers)
| வினாத்தாள் விவரம் / Question Paper Title | பயிற்று மொழி / Medium | பதிவிறக்கம் / Action |
|---|---|---|
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202512th Biology 2nd Mid Term Test Question Paper TM & EM 2025 Salem Dt | G.Thirumoorthi
📍 Salem District Question Paper
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English Medium | 📥 PDF Download |
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202412th Biology 2nd Mid Term Test Question Paper EM 2024 Thoothukudi Dt | Mohammed Salihan –
📍 Thoothukudi District Question Paper
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English Medium | 📥 PDF Download |
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202312th Biology 2nd Mid-term test Question Paper 2023 | Chennai District –
📍 Chennai District Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Biology 2nd Mid Term Exam Original Question Paper 2022 2023 Tirupattur District Tamil Medium PDF Download.
📍 Tirupattur District Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Biology 2nd Mid Term Exam 2022 Original Question Paper Tirupattur District English Medium PDF Download
📍 Tirupattur District Question Paper
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English Medium | 📥 PDF Download |
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202212th Biology 2nd Mid Term Exam 2022 Original Question Paper Kanchipuram District Tamil Medium PDF Download
📍 Kanchipuram District Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Biology 2nd Mid Term Exam Original Question Paper Tenkasi District 2022 English Medium PDF Download.
📍 Tenkasi District Question Paper
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English Medium | 📥 PDF Download |
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202212th Biology TM 2nd Mid Term Exam 2022 Original Question Paper Kanchipuram District Tamil Medium PDF Download
📍 Kanchipuram District Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Biology 2nd Mid Term Exam 2019 Original Question Paper Nagai District Tamil Medium PDF Download
Model Paper Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Biology 2nd Mid Term Exam 2019 Original Question Paper Thiruavarur District Tamil Medium PDF Download
Model Paper Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Biology 2nd Mid Term Exam 2019 Original Question Paper Kanniyakumari District Tamil Medium PDF Download
Model Paper Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Biology 2nd Mid Term Exam 2019 Original Question Paper with Answer Keys Namakkal District English Medium PDF Download
📍 Namakkal District Answer Key Included
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English Medium | 📥 PDF Download |
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202212th Biology 2nd Mid Term Exam 2019 Original Question Paper with Answer Keys Namakkal District Tamil Medium PDF Download
📍 Namakkal District Answer Key Included
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Tamil Medium | 📥 PDF Download |
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202212th Botany 2nd Mid Term Exam Original Question Paper 2022 2023 Tirupattur District Tamil Medium PDF Download..
📍 Tirupattur District Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Botany 2nd Mid Term Exam 2022 Original Question Paper Kanchipuram District Tamil Medium PDF Download
📍 Kanchipuram District Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Botany TM 2nd Mid Term Exam 2022 Original Question Paper Kanchipuram District Tamil Medium PDF Download
📍 Kanchipuram District Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Zoology 2nd Mid Term Exam 2022 Original Question Paper with Answer Keys Pudhukottai District English Medium PDF Download
Model Paper Answer Key Included
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English Medium | 📥 PDF Download |
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202212th Zoology 2nd Mid Term Exam Original Question Paper 2022 2023 Kanchipuram District Tamil Medium PDF Download..
📍 Kanchipuram District Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Zoology 2nd Mid Term Exam Original Question Paper 2022 2023 Tirupattur District Tamil Medium PDF Download
📍 Tirupattur District Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Zoology TM 2nd Mid Term Exam 2022 2023 Model Question Paper Tamil Medium PDF Download
Model Paper Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Zoology TM 2nd Mid Term Exam 2022 Original Question Paper Kanchipuram District Tamil Medium PDF Download
📍 Kanchipuram District Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Zoology 2nd Mid Term Exam 2019 Original Question Paper Coimbatore District Tamil Medium PDF Download
📍 Coimbatore District Question Paper
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Tamil Medium | 📥 PDF Download |
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202212th Zoology 2nd Mid Term Exam 2019 Original Question Paper with Answer Keys Namakkal District Tamil Medium PDF Download
📍 Namakkal District Answer Key Included
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Tamil Medium | 📥 PDF Download |
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202212th Zoology 2nd Mid Term Exam 2019 Original Question Paper with Answer Keys Namakkal District English Medium PDF Download
📍 Namakkal District Answer Key Included
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English Medium | 📥 PDF Download |
❓ Frequently Asked Questions (FAQ) — TN 12TH Biology 2nd Mid Term
What is the division between Bio-Botany and Bio-Zoology marks?
Bio-Botany carries 25 marks and Bio-Zoology carries 25 marks, totaling 50 marks.
Which diagrams are essential in 12th Biology?
Structure of pBR322 plasmid, Steps in Plant Tissue Culture, DNA replication fork, and Lac operon.
Where to download official 12th Biology papers?
All district question papers in TM & EM are available in our download table.
What are the high-yield genetics questions in 12th Biology?
Properties of genetic code, Hershey-Chase experiment, and regulation of gene expression in Lac operon.
How to score full marks in 5-mark biology questions?
Present answers with neat sub-headings, flowchart of biochemical steps, and a clean labeled diagram.
📌 Important Higher Secondary Study Resources:
- TN 12TH 2nd Mid Term All Subjects Master Hub — Access all subjects question papers and keys.
- Tamil Nadu 2nd Mid Term Master Portal (Classes 6 to 12) — Complete statewide collection.
- Tamil Nadu 12TH Textbooks PDF (Tamil & English Medium) — Download TNSCERT books.
- TN 12TH Public Exam Time Table 2027 — Official DGE board exam dates.