Biology (first assessment 2025)
IB Biology (first assessment 2025) — Diversity of Organisms topical past papers
8 past-paper questions on Diversity of Organisms for Biology (first assessment 2025).
- Questions
- 8
- Years
- 2025–2025
- With mark scheme
- 100%
- Questions 2021–2025
- 8
Anyone can browse these pages. Opening the questions and their mark schemes takes a free Momentum account.
How Diversity of Organisms has been examined
From 2021 to 2025, Diversity of Organisms was on 1B HL in 1 of 1 exam series, worth about 15% of that paper’s marks.
| Paper | Questions | Share of marks | Series |
|---|---|---|---|
| 1A HL | 2 | 2% | 1 of 1 |
| 1A SL | 2 | 2% | 1 of 1 |
| 1B HL | 2 | 15% | 1 of 1 |
| 1B SL | 1 | 9% | 1 of 1 |
| 2 SL | 1 | 2% | 1 of 1 |
Momentum’s own count, over the questions in its bank for these years: a series is one exam session, every zone included, and a question filed under two chapters counts in both. Median marks per question: 1.
Filed in Momentum under: Diversity of Organisms.
Practising in Momentum
- Every question in a chapter as one list, from every paper and year in the bank, newest first or shuffled.
- Each question turns over to its own part of the mark scheme, where the board published one.
- Narrow by paper, year, session, zone and marks, and star the questions worth keeping.
- Pick chapters, a number of questions and a time, and the exam builder draws a mock to sit and mark.
Past-paper questions and mark schemes are the copyright of International Baccalaureate. Momentum shows them to signed-in learners for revision and does not publish them on these pages.