WAEC GCE Biology 2025 Practice Questions & Answers Guide

Introduction

WAEC GCE Biology 2025 Practice Questions and Answers

Biology is one of the core science subjects in the WAEC GCE 2025 examination, and it plays a critical role in preparing candidates for careers in medicine, pharmacy, agriculture, biotechnology, and other science-related fields. Students often find Biology interesting because it explains life and living organisms, but it can also be challenging due to its wide scope of topics and numerous terminologies.To succeed, candidates must not only read textbooks but also practice past and likely questions. This article provides WAEC GCE Biology 2025 practice questions and answers to guide students in their preparation. These questions are carefully selected to reflect the examination style and are designed purely for practice.

👉 Note: These are sample questions for revision purposes only. They are not leaked exam questions. WAEC strongly discourages malpractice, and students are advised to study sincerely for success.

WAEC GCE Biology 2025 Practice Questions and Answers

Section A – Objective Questions

1. Which of the following is NOT a characteristic of living things?
A. Respiration
B. Growth
C. Photosynthesis
D. Reproduction

Answer: C. Photosynthesis
Not all living things photosynthesize; animals cannot.

2. Which organelle is responsible for cellular energy production?
A. Nucleus
B. Mitochondrion
C. Ribosome
D. Chloroplast

Answer: B. Mitochondrion
Known as the powerhouse of the cell.

3. The mode of nutrition in fungi is:
A. Autotrophic
B. Parasitic
C. Saprophytic
D. Chemosynthetic

Answer: C. Saprophytic

4. Which organism transmits malaria?
A. Tsetse fly
B. Anopheles mosquito
C. Housefly
D. Blackfly

Answer: B. Anopheles mosquito

5. The basic functional unit of the kidney is the:
A. Nephron
B. Tubule
C. Alveolus
D. Glomerulus

Answer: A. Nephron

6. Which part of the plant is modified to form a bulb?
A. Stem
B. Root
C. Leaf
D. Flower

Answer: A. Stem

7. The part of the mammalian brain responsible for balance is the:
A. Cerebrum
B. Cerebellum
C. Medulla
D. Hypothalamus

Answer: B. Cerebellum

8. The longest bone in the human body is the:
A. Tibia
B. Femur
C. Humerus
D. Radius

Answer: B. Femur

Section B – Theory Questions

1. Define photosynthesis and write its balanced chemical equation.
Answer:
Photosynthesis is the process by which green plants manufacture food using carbon dioxide, water, and sunlight in the presence of chlorophyll.

Equation:
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

2. List five differences between plant and animal cells.
Answer:

Plant cells have a cell wall, animal cells do not.
Plant cells have chloroplasts, animal cells lack chloroplasts.
Plant cells contain large vacuoles, animal cells contain small or none.
Plant cells are usually rectangular, animal cells are mostly rounded.
Plant cells can photosynthesize, animal cells cannot.

3. State three functions of the human skeleton.
Answer:

Provides support and framework for the body.
Protects delicate organs such as the heart and brain.
Enables movement through attachment of muscles.

4. Differentiate between aerobic and anaerobic respiration.
Answer:

Aerobic respiration: Requires oxygen, produces more energy, and releases carbon dioxide and water.
Anaerobic respiration: Takes place without oxygen, produces less energy, and results in by-products like lactic acid or ethanol.

5. Explain three methods of conserving wildlife.
Answer:

Establishing game reserves and national parks.
Implementing laws against illegal hunting.
Creating awareness on the importance of wildlife conservation.

6. Mention four agents of pollination.
Answer:

Insects
Wind
Water
Birds

7. Define ecology and state two components of an ecosystem.
Answer:
Ecology is the study of the interactions between living organisms and their environment.

Components:

Biotic factors – living organisms like plants, animals, fungi, and bacteria.
Abiotic factors – non-living components such as air, water, soil, and temperature.

8. Describe two structural differences between arteries and veins.
Answer:

Arteries have thick, muscular walls; veins have thinner walls.
Veins contain valves to prevent backflow; arteries do not.

Key Biology Topics to Revise for WAEC GCE 2025

Cell Biology: Structure and functions of cell organelles.
Genetics: Mendelian inheritance, variation, and evolution.
Reproduction: Sexual and asexual reproduction in plants and animals.
Ecology: Ecosystem balance, energy flow, food chains and food webs.
Human Biology: Circulatory system, digestive system, excretion, respiration.
Plant Biology: Photosynthesis, transpiration, transport in plants.
Health and Diseases: Pathogens, disease vectors, methods of control.

Tips for Scoring High in WAEC GCE Biology 2025

Practice Past Questions Regularly
Familiarize yourself with WAEC-style questions. This sharpens exam confidence.
Master Diagrams
Practice drawing and labeling diagrams of cells, organs, and life cycles. Biology exams often require neat, well-labeled diagrams.
Understand Definitions
Learn precise definitions of key terms such as osmosis, respiration, and ecosystem.
Time Management
During the exam, allocate time wisely between objectives and theory.
Revise Daily
Instead of last-minute cramming, revise little by little every day.

Conclusion

The WAEC GCE Biology 2025 examination requires dedication, thorough preparation, and constant practice. By working through practice questions, understanding key concepts, and revising important topics, candidates can build confidence and achieve excellent results.

VISIT WAEC GCE OFFICIAL WEBSITE HERE;https://registration.waecdirect.org/

Remember, honest preparation is the key to success. Avoid shortcuts, focus on consistent study, and you will be well prepared to pass Biology and other subjects in the upcoming GCE