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The marks distribution of ICSE Class 10 Biology Weightage 2025 across all units and chapters is provided here. Do note that the weightage is unofficial and as per previous years' papers analysis.
ICSE Class 10 Biology Weightage 2025ICSE Class 10 Biology Weightage 2025: The Council for the Indian School Certificate Examinations has released the ICSE Class 10 syllabus and paper pattern on the official website. The candidates can find out ICSE Class 10 Biology chapter-wise and unit-wise weightage here as analysed from the previous papers. As per the paper pattern, the theoretical paper of the Biology paper contains 80 marks; whereas the Internal assessment of practical work will carry 20 marks. The time duration of the ICSE Class 10 Biology theoretical exam is 2 hours.
Candidates can refer to the ICSE Class 10 Biology chapter-wise weightage here so that they candidates can find out the most weightage chapters for the exam and take preparation accordingly.
ICSE Class 10 Biology Weightage 2025 Chapter-Wise
As per the experts, there will be two sections, such as Section A (40 marks) and Section B (40 marks) in the theoretical exam. Check out the chapter-wise weightage and marks distribution of the ICSE Class 10 Biology 2025 exam here in the following section:
| Unit | Chapter Names | Section A Weightage | Section B Weightage | Total Weightage |
|---|---|---|---|---|
| Unit 1: Basic Biology | Structure of Chromosomes, Cell Division | 2 | 9 | 11 marks |
| Genetics | 2 | 11 | 13 marks | |
| Unit 2: Plant Physiology | Absorption by Roots | 3 | 1 | 4 marks |
| Transpiration | 1 | 0 | 1 marks | |
| Photosynthesis | 3 | 10 | 13 marks | |
| Chemical Co-ordination of Plants | 1 | 3 | 4 marks | |
| Unit 3: Human Anatomy & Physiology | The Circulatory System | 3 | 5 | 8 marks |
| The Excretory System | 5 | 0 | 5 marks | |
| The Nervous System | 11 | 5 | 16 marks | |
| Sense Organs | 5 | 4 | 9 marks | |
| The Endocrine System | 2 | 0 | 2 marks | |
| The Reproduction System | 2 | 6 | 8 marks | |
| Unit 4 | Human Evolution | 1 | 5 | 6 marks |
| Unit 5 | Population | 1 | 0 | 1 mark |
| Unit 6 | Pollution | 3 | 5 | 8 marks |
ICSE Class 10 Subject-Wise Weightage 2025|
