Biology Past Papers — Class 10
Every official Karachi Board Biology paper from 2022 to 2025, with the exam pattern and chapter weightage you need to practise smart.
- Papers
- 4
- Years
- 2022–2025
- Total marks
- 60
- Duration
- 2 hours 10 minutes
Download every year
Official Karachi Board papers, newest first.
Exam pattern & chapter weightage
Know the structure before you practise.
Paper structure
Objective (MCQs)12 marks · 12 questions
Short questions33 marks · 11 questions
Long questions15 marks · 3 questions
Where the marks come from
Cell Biology & GeneticsFocus here
18 marksHuman & Plant PhysiologyFocus here
20 marksEcology & Diversity
10 marksHow to use these papers
Biology-specific advice for Class 10 students.
Study tips
- Focus on diagrams — labelled diagrams carry dedicated marks
- Memorise scientific names for the objective section
- Long questions usually come from Physiology and Genetics
Common mistakes to avoid
- Unlabelled diagrams
- Confusing mitosis and meiosis stages
Frequently asked questions
How many Biology past papers are available for Class 10?
4 official Biology papers for Class 10 (Karachi Board), covering 2022 to 2025. Each is the original board exam paper.
Are these Biology papers official?
Yes — these are the same papers administered by Karachi Board during annual examinations, which makes them the most reliable practice material available.
How should I practise with these papers?
Start with the most recent year and work backwards. Time yourself strictly (2 hours 10 minutes), then review your answers against the marking scheme where available.
What is the exam pattern for Class 10 Biology?
The paper is worth 60 marks and lasts 2 hours 10 minutes: Objective (MCQs) (12 marks), Short questions (33 marks), Long questions (15 marks).