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ICSE Class Ten Biology Exam Pattern Two Thousand Twenty Six Released

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• Updated on 26 Nov, 2025, 1:50 PM, by Ishita Tanwar

ICSE Class Ten Biology Exam Pattern Two Thousand Twenty Six Released

The Council for the Indian School Certificate Examinations (CISCE) has officially released the ICSE Class Ten Biology exam pattern for the academic session Two Thousand Twenty Five–Twenty Six. The structured assessment framework outlines the distribution of marks between external theory evaluation and internal practical assessment. Biology will continue to carry a total of one hundred marks, divided into eighty marks for the theory paper and twenty marks for internal assessment. The theory examination will be conducted for a duration of two hours in offline mode. The paper will include short answer compulsory questions and long answer choice-based questions, with strong emphasis on diagrams, application-based reasoning, and conceptual understanding.

 

ICSE Class Ten Biology Two Thousand Twenty Six: Key Exam Highlights

A snapshot of the official exam structure is provided below for clarity:

Particulars

Details

Conducting Authority

Council for the Indian School Certificate Examinations

Examination Name

ICSE Class Ten Biology Board Examination

Academic Session

Two Thousand Twenty Five–Twenty Six

Total Marks

One Hundred

Theory Examination

Eighty Marks

Internal Assessment

Twenty Marks

Duration of Theory Paper

Two Hours

Sections

Two Sections: A and B

Mode of Examination

Offline (Pen and Paper)

Medium of Examination

English and Hindi

This structure ensures a balanced evaluation of theoretical knowledge and practical skills.

 

Distribution of Marks Between External and Internal Assessment

The percentage-wise division of marks has remained unchanged for Biology:

Subject

External Assessment

Internal Assessment

Biology

Eighty Percent

Twenty Percent

Internal assessment will be based on laboratory practical work, project submission, and continuous evaluation throughout the academic session.

 

ICSE Class Ten Biology Two Thousand Twenty Six: Unit-Wise Weightage

CISCE has also released the unit-wise mark distribution for Sections A and B, helping students identify high-scoring areas.

Unit

Chapters

Section A

Section B

Total Marks

Unit One: Basic Biology

Structure of Chromosomes, Cell Division

Two

Nine

Eleven

 

Genetics

Two

Eleven

Thirteen

 

Absorption by Roots

Three

One

Four

Unit Two: Plant Physiology

Transpiration

One

Zero

One

 

Photosynthesis

Three

Ten

Thirteen

 

Chemical Coordination in Plants

One

Three

Four

Unit Three: Human Anatomy and Physiology

Circulatory System

Three

Five

Eight

 

Excretory System

Five

Zero

Five

 

Nervous System

Eleven

Five

Sixteen

 

Sense Organs

Five

Four

Nine

 

Endocrine System

Two

Zero

Two

 

Reproductive System

Two

Six

Eight

Unit Four

Human Evolution

One

Five

Six

Unit Five

Population

One

Zero

One

Unit Six

Pollution

Three

Five

Eight

The combined total of Section A equals forty marks, and Section B equals forty marks, confirming that the theory paper carries eighty marks in total

 

High-Weightage Topics for Focused Preparation

Based on the official weightage, the following units carry the highest scoring potential:

  • Nervous System – Sixteen Marks
  • Genetics – Thirteen Marks
  • Photosynthesis – Thirteen Marks
  • Sense Organs – Nine Marks
  • Circulatory System and Reproductive System – Eight Marks each

Education experts advise students to give maximum priority to Human Anatomy and Physiology and Genetics, as these units together account for a significant portion of the total paper.

 

Question Pattern and Evaluation Method

Section A will consist of compulsory short answer questions testing fundamental concepts. Section B will contain long answer descriptive questions with internal choices, requiring students to attempt any four questions. Diagrams, reasoning-based answers, and clarity of biological processes will carry strict marking standards. Internal assessment will evaluate students on:

  • Laboratory experiments
  • Biology project work
  • Practical record submission
  • Continuous classroom observation

 

What Students Should Note for the Two Thousand Twenty Six Board Exam?

  • Strong command over conceptual clarity and diagrammatic representation remains essential.
  • Human Physiology units together contribute more than forty percent of the theory paper.
  • Internal assessment continues to hold twenty marks, which can significantly improve overall scores.

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