Theories of evolution

Contents & notes: what this topic covers

Under Theories of evolution, the JAMB Biology syllabus expects you to study:

• 1. Theories of evolution a) Lamarck’s theory b) Darwin’s theory c) organic theory

Study notes & guidance

Study Theories of evolution using a recommended Biology textbook that follows the JAMB syllabus. Work through the contents listed above one by one, make brief notes in your own words, and then practise as many questions on this topic as you can — in Biology, understanding and steady practice matter far more than memorising. Use the objectives below as a checklist: if you can do each one confidently, you have mastered this topic.

Objectives — candidates should be able to

After studying Theories of evolution, you should be able to:

1. Relate organic evolution as the sum total of all adaptive changes that have taken place over a long period of time resulting in the diversity of forms, structures and functions among organisms.
2. Explain the contributions of Lamarck and Darwin to the theory of evolution.
3. State the evidences in support of organic evolution

These objectives are from the official JAMB syllabus. Use them as a checklist — if you can do each one confidently, you have mastered this topic.

Source: official JAMB UTME Biology syllabus (IBASS, jamb.gov.ng). Reproduced for study use. Last checked: 17 Sept 2026. Always confirm the current syllabus on the official portal.