As you prepare for the WAEC Biology exam in 2025/2026, it’s important to know the most repeated topics, questions, and answers in WAEC Biology. Focusing on these common areas can help you understand what to expect in the exam and give you a better chance of scoring high.
In this post, I’ll be showing you the most repeated WAEC Biology topics, questions, and answers for the 2025/2026 exam. If you've been asking yourself questions like: What are the most common WAEC Biology questions?, What are the key topics in Biology that WAEC sets every year?, How can I study hard for WAEC?, What are the important topics in Biology for WAEC?, What are the most repeated WAEC questions in Biology?, What is the area of concentration in WAEC Biology?, Where can I find WAEC Biology past questions with answers?, Which Biology topics come out every year in WAEC?, How do I pass WAEC Biology without cramming everything?, Are there repeated questions in WAEC Biology exams?, Can I study only past questions and still pass WAEC Biology?, How can I download WAEC Biology questions and answers PDF for free?, Is it true WAEC repeats Biology questions every year?, and What are the most likely Biology questions in WAEC 2025/2026? — then you are definitely in the right place.
Why Study the Most Repeated WAEC Biology Topics and Questions?
WAEC Biology is a large subject. But the truth is, WAEC repeats questions — sometimes exactly, other times with little changes.
By knowing the most repeated WAEC Biology topics, you’ll:
Study less, but smarter
Answer more questions correctly
Understand the exam pattern
Many successful candidates study this way — and now it’s your turn to do the same.
Most Repeated WAEC Biology Topics (2025/2026)
Below are the top Biology topics that WAEC loves to bring almost every year. Focus your study time here:
1. Cell Structure and Functions
Parts of plant and animal cells
Differences between plant and animal cells
Functions of organelles (nucleus, mitochondria, etc.)
2. Tissues and Support Systems
Types of tissues in plants and animals
Functions of tissues
Human skeleton, joints, and bones
3. Nutrition in Humans and Plants
Food classes and examples
Digestion and enzymes
Photosynthesis and food tests
4. Transport System
Circulatory system in humans
Structure and function of the heart
Xylem and phloem in plants
5. Respiration
Aerobic and anaerobic respiration
Energy release in cells
Respiratory system in humans
6. Excretion
Human excretory organs (kidney, lungs, skin)
Differences between excretion and egestion
Excretion in plants
7. Reproduction
Human reproductive systems
Sexual and asexual reproduction
Pollination and fertilization
8. Growth and Development
Types of germination
Growth curves
Factors that affect plant and animal growth
9. Ecology
Ecosystem components
Food chains and food webs
Adaptations and conservation
10. Genetics and Heredity
Mendel’s laws of inheritance
Genotype and phenotype
Sex determination
11. Evolution
Darwin and Lamarck’s theories
Natural selection
Fossil evidence
12. Classification of Living Organisms
Five kingdoms of classification
Binomial naming system
Grouping of animals and plants
13. Sense Organs
Structure of the eye, ear, tongue, skin, and nose
Functions and responses
Reflex actions
14. Hormonal Control
Human endocrine glands and hormones
Hormonal vs nervous control
Hormone imbalance effects
15. Micro-organisms and Diseases
Bacteria, viruses, and fungi
Diseases caused by microbes
Benefits of microbes
Most Repeated WAEC Biology Questions (2025/2026)
Here are examples of frequently repeated WAEC Biology questions. You can use these to test yourself or for group revision:
State three functions of the kidney.
List four differences between plant and animal cells.
What are the main components of blood?
Describe the process of photosynthesis.
Name the parts of the human ear and state their functions.
Explain the term osmosis and give an example.
State two functions of xylem tissue in plants.
What is a reflex action?
Define genotype and phenotype.
Give three causes of air pollution and how they can be controlled.
📌 Want the complete correct answers with explanations?
👉 Click here to access WAEC Biology questions and answers
Study Tips to Use WAEC Biology Questions and Topics Effectively
To pass WAEC Biology with these repeated topics and questions, follow these tips:
✅ Make a Simple Study Plan
Break your study into daily or weekly goals using these 15 key Biology topics.
✅ Practice with Past Questions
Don’t just read — actively solve past questions and mark your progress.
✅ Use Flashcards & Diagrams
Biology involves many terms and labeled diagrams. Practice drawing cells, the heart, and other organs.
✅ Learn with Friends
Join group discussions or study groups to explain difficult topics faster.
✅ Revise Frequently
Read, test yourself, and revise again. Repetition helps improve memory retention.
✅ Download the Answers to These Questions
🎯 Ready to see the correct answers and explanations in simple English?
👉 Click here study the Most Repeated WAEC Biology Questions and Answers
FAQ – Most Repeated WAEC Biology Topics, Questions and Answers
Here are 10 common questions students ask about WAEC Biology:
1. Are WAEC Biology questions repeated every year?
Yes, WAEC often repeats questions with little or no changes, especially in theory and objective sections.
2. Can I pass WAEC Biology by studying only past questions?
You’ll pass better if you also understand the topics behind the questions. Don’t just cram answers.
3. Which topics are most common in WAEC Biology?
Topics like reproduction, respiration, ecology, nutrition, and cell structure come up every year.
4. Is WAEC Biology harder than other science subjects?
Not really. With proper preparation and focus on key topics, it can be one of the easiest science subjects.
5. Where can I download WAEC Biology questions and answers PDF?
You can click the link above to access a free, downloadable PDF.
6. Do WAEC GCE and SSCE use the same Biology syllabus?
Yes, both exams use the same syllabus and often have similar or identical questions.
7. What type of diagrams are usually asked in WAEC Biology?
Diagrams of plant and animal cells, digestive system, heart, eye, kidney, and leaf structure are common.
8. How do I study Biology definitions and processes easily?
Use flashcards and quiz apps, and explain what you’ve learned to others. Teaching helps retention.
9. Are these questions useful for NECO too?
Yes. WAEC and NECO often test similar topics. The questions and study tips apply to both.
10. When should I start preparing for WAEC Biology?
Start at least 3–4 months before your exam. The earlier, the better your confidence and understanding.
