The Sri Lankan Biology Olympiad 2025 examination is on Sunday 26 October 2025 from 09.00 am to 01.00 pm as an online examination.
G.C.E. (A/L) Content (Subject Areas 1-4)
Study Units 1, 2, 3, 4, and 5 of the G.C.E. (A/L) Biology Resource Book:
- Unit 1: Introduction to Biology
- Unit 2: Chemical and Cellular Basis of Life
- Unit 3: Evolution and Diversity of Organisms
- Unit 4: Functioning Plant
- Unit 5: Functioning Animal
G.C.E. (O/L) Content (Subject Areas 5-6)
Study from G.C.E. (O/L ) Science Textbooks:
- Genetics: Grade 10, Unit 20 (Inheritance)
- Environment: Grade 11, Unit 15 (Biosphere)
📥 Where to Get O/L Books:
Download free at: http://www.edupub.gov.lk/BooksDownload.php
📝 Exam Format (online exam):
- Part A: 30 single-response answer MCQs
- Part B: 20 multiple-response answer MCQs
- Duration: 2 hours