NIOS Class 12 biology (314) TMA2025-26 – Solved Assignment – Weightage, Last date & Full Guide
The NIOS Class 12 biology (314) TMA-2025-26 is worth 20 marks. It must be submitted before 31 January 2025 for the April/May exam or 31 July 2025 for the October/November exam.
40 percent of the Biology syllabus is used for TMA questions. The complete guide, including the syllabus bifurcation and marking rules, is below. It also includes examples of solved questions, TMA writing instructions, and deadlines.
This guide includes the following:
- Full syllabus bifurcation
- Important TMA dates
- Marking pattern
- Solved TMA Question 1
- TMA writing rules
- Common mistakes
- FAQs
Quick Snapshot – NIOS Biology (314) TMA 2025–26
| Column 1 | Column 2 |
|---|---|
| The Subject | Biology (314) – Class 12 NIOS |
| Total TMA Marks | 20 Marks |
| TMA Weight | 20% final Biology score |
| Answer Length | 40-60 Words |
| April/May TMA End Date | 31 Jan 2025 |
| Teacher Feedback | 15 Feb 2025 |
| Oct/Nov TMA Last Date | 31 Jul 2025 |
| Teacher Feedback | 15 August, 2025 |
Why Biology (314) TMA Matters
- TMA will add 20 points directly to your public exam score.
- TMA complements the lengthy Biology Theory portion by allowing you to score efficiently.
- Full marks are generally awarded for correct responses in the 18-20/20 range.
- The only way students can lose marks is by copying, writing, or giving incomplete answers.
Submitting a clear, original TMA is the easiest way to score in NIOS biology.
NIOS Science (314) Syllabus – TMA vs Public Exam
| Column 1 | Column 2 | Column 3 | Column 4 |
|---|---|---|---|
| Module 1 | Diversity & Evolution of Life | L-1 Origin and Evolution of Life L-4 Cell Structure and Function | L-2 Kingdom Monera, Protista & Fungi; L-3 Kingdom Plantae & Animalia; L-5 Tissues & Organisation |
| Module I | Plants and Animals: Their Forms and Functions | L-8 Transport in plants, L-9 Nutrition (Mineral Nutrition), L-13 Nutrition and Digestion, L-14 Plant Respiration, L-16 Movement & Locomotion, L-18 Homeostasis | L-6 Root, L-7 Shoot, L-10 Nitrogen Metabolism, L-11 Photosynthesis, L-12 Respiration, L-15 Circulation, L-17 Nervous & Endocrine System |
| Module 3 | Reproduction and Heredity | L-20 Growth & Development in Plants, L-24 Genetics & Society | L-23 Molecular inheritance, L-22 Genetic Principles, L-21 Reproduction & Population Control |
| Module 4 | Environment & Health | L-26 Pollution and Use of Natural Resources | L-25 Ecology, L-28 Nutrition & Health |
| Module V | Emerging areas in Biology | – | L-30 Immunobiology, L-31 Biotechnology |
TMA Questions always come from the left (40%) section.
Now let’s break down exactly how the NIOS Biology TMA (314) is structured:
- There are two possible answers to each question (A or B).
- Keep short answers within 40-60 words for best results.
- Label all required diagrams clearly.
- The steps / explanation are more important than the final answer.
Official instructions also state:
- Write name, enrolment number, and AI centre on the first page.
- All answers must be handwritten.
Solved Example – Biology (314) TMA 2025–26
Q1 (a) Explain differential reproduction in two stages. (Lesson 1)
Answer (40-60 words):
Differential reproduction is the process by which organisms with desirable traits live longer and produce more offspring.
There are two stages:
- Variation: Individuals vary due to inherited characteristics.
- Selection: The traits that are advantageous to the population will be passed on more effectively. This results in gradual changes to populations.
Q1(b) One Difference Between Prophase of Mitosis and Prophase of Meiosis I
| Column 1 | Column 2 | Column 3 |
|---|---|---|
| Chromosome Pairing | Homologous chromosomes do not pair | Bivalents are formed when homologous chromosomes pair up |
| Crossing over | Absent | Present (creates variations) |
Q1(c) Difference Between Mitotic Anaphase and Meiosis Anaphase I
| Column 1 | Column 2 | Column 3 |
|---|---|---|
| Separation | Sister chromatids are separated | Separate homologous chromosomes |
| Chromosome Number | Remains diploid (2n – 2n) | Reduced to half (2n-n) |
How to Write Perfect Biology (314) TMA Answers — Student Checklist
- Keep your answers short and simple by using 40-60 words.
- Important biological terms
- When needed, use neatly labeled diagrams.
- Use tables for “differences” type questions.
- Use clear, simple English for your answers.
- Keep the margins and spacing neat.
- Copying long paragraphs is not recommended.
- Final clean copy of TMA notebook
- Submit your TMA well before the deadline to ensure timely acceptance.
- A photocopy is a good idea for your safety.
Students make common mistakes.
- Write too much (100 to 150 words)
- Diagrams without labels
- Misusing biological terminology
- Copying lines from textbooks
- Explaining incompletely
- Submission of TMA in a rush
Avoid these mistakes to achieve a score between 18 and 20 marks.
FAQs – Biology (314) TMA 2025-26
1. Is Biology TMA compulsory or not?
You lose all 20 internal marks if the TMA is not submitted.
2. What is the maximum word count?
Each short answer should be between 40 and 60 words.
3. What should I draw?
Only draw and label diagrams if the question requires them.
4. What lessons are taught in TMA
The TMA side syllabus only includes the following chapters:
5. Two students can submit the same TMA.
Teachers deduct marks if you copy answers.
6. What is the expected grade?
18-20/20 is usually the award for a neatly-corrected TMA.
Final Word
- The Biology TMA (314) is among the easiest-scoring parts of the NIOS Curriculum.
- Score high by following the answer structure and using neat handwriting, along with the required diagrams.
- Use provided examples to guide your original, clear, and concise TMA answers.
