Rocks and Soil formation

Contents & notes: what this topic covers

Under Rocks and Soil formation, the JAMB Agricultural Science syllabus expects you to study:

• 1. Rocks and Soil formation a. Rock formation b. Factors affecting rock weathering and soil formation c. Physical properties of soil diff i. Soil profile
• ii. Soil components, texture and
• structure
• iv.
• d. Chemical properties of soil i. Soil acidity and alkalinity ii. Chemical components of soil e.g.
• silicate

Study notes & guidance

Study Rocks and Soil formation using a recommended Agricultural Science 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 Agricultural Science, 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 Rocks and Soil formation, you should be able to:

1. Identify the major types of rocks and their formation. identify major types and properties of soils; factors and processes of soil formation. Agriculture erentiate between the horizons in a soil profile. differentiate between the components of soil. compute the proportion of soil components. analyse soil into its component parts. determine the water-holding capacity of soil. determine the soil pH.

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