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Ikiodiete George
- 2 Min Read
Jamb Biology Cbt Exam (2025/2026): Full List Of Most Repeated Topics & Past Questions
Are you preparing for the 2025/2026 JAMB Biology exam? Whether you're aiming to study Medicine, Nursing, Agriculture, Pharmacy, or other science courses, Biology is a core subject you must pass with a high score.
To pass JAMB Biology with 250+, you don’t need to read every textbook cover to cover. You just need to master the most repeated topics and practice real past questions.
Let’s walk you through the must-know topics, practice questions, and smart strategies.
Overview of JAMB Biology CBT Exam
| Section | Details |
|---|---|
| Exam Type | Computer-Based Test (CBT) |
| Number of Questions | 40 to 50 multiple-choice questions |
| Duration | 45 to 60 minutes |
| Main Topics | Diversity of Life, Ecology, Genetics, Evolution, Physiology |
Most Repeated Topics in JAMB Biology
Below is a list of the most commonly repeated topics in past JAMB Biology exams from 2015 to 2024:
| Topic | What to Study |
|---|---|
| Cell Structure & Functions | Prokaryotic vs. Eukaryotic, Organelles |
| Tissues & Supporting Systems | Plant/animal tissues, skeletal system |
| Nutrition in Plants and Animals | Photosynthesis, digestive enzymes |
| Transport System | Xylem/phloem, blood, heart |
| Respiration & Excretion | Aerobic vs. anaerobic, kidney |
| Reproduction in Organisms | Asexual/sexual reproduction, menstruation |
| Genetics and Heredity | Mendel’s laws, chromosomes, mutations |
| Ecology & Ecosystems | Food chain/web, pyramid, conservation |
| Evolution | Natural selection, evidence of evolution |
| Diseases & Health | Malaria, HIV, immunization |
| Adaptation | Structural, physiological, behavioral |
Topic Frequency Based on JAMB Trends (2015–2024)
| Topic | Frequency |
|---|---|
| Cell Structure & Function | ✅✅✅✅✅✅✅✅✅ |
| Genetics | ✅✅✅✅✅✅✅✅ |
| Nutrition | ✅✅✅✅✅✅ |
| Reproduction | ✅✅✅✅✅✅ |
| Ecology | ✅✅✅✅✅✅✅ |
| Evolution | ✅✅✅✅✅ |
| Health & Diseases | ✅✅✅✅ |
Sample JAMB Biology Past Questions
1. Which organelle is responsible for energy production in a cell?
A. Ribosome
B. Chloroplast
C. Mitochondrion
D. Golgi body
✅ Correct Answer: C
2. The contraction and relaxation of muscles in the esophagus to push food along is known as...
A. Peristalsis
B. Respiration
C. Assimilation
D. Reflex
✅ Correct Answer: A
3. Which blood component helps in clotting?
A. Plasma
B. Red blood cells
C. Platelets
D. White blood cells
✅ Correct Answer: C
4. A dominant gene is one that...
A. Expresses itself only in heterozygous condition
B. Is always hidden
C. Expresses itself in both heterozygous and homozygous conditions
D. Causes mutation
✅ Correct Answer: C
Quick Definitions for Key Terms
| Term | Definition |
|---|---|
| Gene | Basic unit of heredity |
| Allele | Alternative form of a gene |
| Photosynthesis | Process by which green plants make food |
| Mitosis | Cell division that produces identical cells |
| Osmosis | Movement of water through a semi-permeable membrane |
JAMB Biology Study Tips
To score high in JAMB Biology:
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Study with a Focused Syllabus – Use JAMB’s official syllabus as your guide.
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Solve Past Questions Daily – The more questions you solve, the more familiar you become with the exam style.
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Use Visuals – Diagrams and charts (like the heart, lungs, or plant cell) are key.
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Understand Concepts, Don’t Cram – Focus on "why" and "how" instead of memorizing facts.
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Test Yourself Under CBT Conditions – Use JAMB practice apps or CBT centers.
Frequently Asked Questions (FAQs)
Q1: How many Biology questions are in JAMB CBT?
A: Typically 40 to 50 questions.
Q2: Is Biology compulsory in JAMB?
A: Yes, for science-related courses like Medicine, Nursing, Microbiology, etc.
Q3: Can I study Biology without textbooks?
A: You need at least 1–2 textbooks and should practice with real past questions.
Q4: How do I get Biology past questions PDF for free?
A: Many educational platforms like Myschool.ng or Flashlearners offer free downloads.
Final Thoughts
If you want to score 250+ in JAMB Biology, the key is preparation — and not just any preparation, but strategic preparation.
Focus on most repeated topics, understand concepts, and practice with actual JAMB questions.
You don’t need to study everything. You just need to study what matters most.
