As most of the aspirants already know that there are 2 papers in NDA written exam. The first paper is of Mathematics, and the second paper is of the General Ability Test that contains English, Geography, History, Polity, Current Affairs, Physics, Chemistry, and Biology. We have already discussed other subjects of GAT; here we’ll discuss NDA Biology trend analysis. Students looking best NDA Coaching in Lucknow can join Target Defence Academy.

Overview of the NDA Exam:
Before understanding the weightage and trend analysis of Biology in NDA, we should take an overview of the NDA exam and its syllabus.
| Name of the Exam | National Defence Academy (NDA) |
| Conducting Body | Union Public Service Commission, UPSC |
| Frequency of Exam | Twice in a Year (April & September) |
| Selection Process | Written Test consisting of Objective Type Questions, Intelligence & Personality Test (SSB) |
| Mode of exam | Offline |
| Papers in NDA Exam | Mathematics & General Ability Test |
| Marks Segregation | Mathematics: 300 Marks, GAT: 600 Marks |
| Total No. of Questions | Mathematics: 120, GAT: 150 |
| Negative Marking | Mathematics: -0.83, GAT: -1.33 marks |
| Exam Duration | 2.5 Hours For Each Paper (5 hours total) |
| Language of Question Paper | English & Hindi (English Language paper has to be attempted in English) |
Syllabus of Biology for NDA
The second paper of the NDA is on GAT and is divided into two parts: (i) English Section and (ii) GS Section. In the second part of the GAT, 8 to 12 questions are asked from Biology. Below, we have given a list of topics in the Biology syllabus.
- Basics of Life
- Human Physiology
- Blood Circulatory System
- Digestive System
- Respiratory System
- Skeletal System
- Central Nervous System
- Disease and Balance Diet and Energy Source
- Plant Kingdom
- Classification
- Sexual and Asexual Reproduction
- Photosynthesis
- Tissues
NDA Biology Trend Analysis
| Topics and Year | 1 2022 | 2 2022 | 1 2023 | 2 2023 | 1 2024 | 2 2024 | 1 2025 | |
| Basics of Life | 3 | 1 | 4 | 1 | 5 | 3 | 1 | |
| Human Physiology | Blood Circulatory System | 0 | 2 | 0 | 0 | 1 | 0 | 1 |
| Digestive System | 0 | 3 | 1 | 0 | 1 | 0 | 0 | |
| Respiratory System | 0 | 1 | 1 | 1 | 0 | 0 | 1 | |
| Skeletal System | 0 | 1 | 0 | 1 | 0 | 1 | 0 | |
| Central Nervous System | 0 | 1 | 0 | 0 | 0 | 0 | 0 | |
| Disease and Balance Diet and Energy Source | 1 | 0 | 2 | 1 | 1 | 0 | 6 | |
| Plant Kingdom | Classification | 1 | 0 | 2 | 0 | 1 | 3 | 0 |
| Asexual and Sexual Reproduction | 2 | 1 | 1 | 5 | 0 | 0 | 0 | |
| Photosynthesis | 0 | 0 | 0 | 2 | 0 | 1 | 0 | |
| Tissues | 0 | 1 | 1 | 0 | 0 | 1 | 1 | |
| Total | 10 | 11 | 12 | 11 | 9 | 9 | 10 | |
Our Latest Selections:



| People also read: | |
| NDA Study Material PDF | Best Books for NDA | Download NDA Syllabus PDF |
Biology Practice Sheets and Class Notes
Teachers at Target Defence Academy give topic-wise Practice Sheets and Class Notes to students after the completion of each topic. Below, we have given practice sheets and class notes for samples that will definitely help the students in their practice.
| Biology Practice Sheet | Biology Class Notes (Will be updated soon) |
Conclusion
Target Defence Academy provides the best guidance for candidates preparing for the NDA examination. By prioritizing effective communication and strategic exam preparation, Target Defence Academy equips students with the necessary proficiency in all subjects to fulfill the rigorous requirements of the NDA.
