WAEC Biology Past Questions And Answers (Objective and Theory)
Section A: Biology WAEC Objectives Questions
Question: What is the primary function of red blood cells?
A) Transport of oxygen
B) Blood clotting
C) Nutrient absorption
D) Immune response
Answer: A) Transport of oxygen
Question: Which organelle is responsible for cellular respiration?
A) Nucleus
B) Mitochondrion
C) Endoplasmic reticulum
D) Golgi apparatus
Answer: B) Mitochondrion
Question: What is the role of the enzyme amylase in digestion?
A) Protein breakdown
B) Fat digestion
C) Starch digestion
D) Nucleic acid synthesis
Answer: C) Starch digestion
Question: In which phase of the cell cycle does DNA replication occur?
A) G1 phase
B) S phase
C) G2 phase
D) M phase
Answer: B) S phase
Question: Which of the following is a function of the nervous system?
A) Blood circulation
B) Hormone production
C) Coordination of body activities
D) Digestion
Answer: C) Coordination of body activities
Question: What is the purpose of meiosis in sexual reproduction?
A) Production of gametes
B) Growth and development
C) Tissue repair
D) Energy production
Answer: A) Production of gametes
Question: What is the smallest unit of evolution?
A) Species
B) Population
C) Gene
D) Organism
Answer: C) Gene
Question: Which gas is primarily responsible for the greenhouse effect?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Hydrogen
Answer: C) Carbon dioxide
Question: What is the function of the ribosome in a cell?
A) Energy production
B) Protein synthesis
C) Lipid storage
D) Waste elimination
Answer: B) Protein synthesis
Question: In photosynthesis, what is the main pigment responsible for capturing light energy?
A) Chlorophyll
B) Carotenoid
C) Melanin
D) Anthocyanin
Answer: A) Chlorophyll
Question: Which process involves the exchange of gases between the lungs and blood capillaries?
A) Osmosis
B) Diffusion
C) Active transport
D) Filtration
Answer: B) Diffusion
Question: What is the function of the enzyme pepsin in the digestive system?
A) Carbohydrate digestion
B) Fat digestion
C) Protein digestion
D) Nucleic acid synthesis
Answer: C) Protein digestion
Question: What type of joint is found in the human skull?
A) Ball and socket joint
B) Hinge joint
C) Fixed joint
D) Pivot joint
Answer: C) Fixed joint
Question: Which of the following is a parasitic infection?
A) Influenza
B) Malaria
C) Tuberculosis
D) Pneumonia
Answer: B) Malaria
Question: What is the main function of the excretory system?
A) Reproduction
B) Regulation of body temperature
C) Elimination of waste products
D) Digestion
Answer: C) Elimination of waste products
Section B: Biology WAEC Theory Questions
Question: Explain the process of photosynthesis, highlighting the role of chlorophyll.
Answer: (Your detailed response)
Question: Discuss the importance of biodiversity in ecosystems.
Answer: (Your detailed response)
Question: Describe the structure and function of DNA in living organisms.
Answer: (Your detailed response)
Question: Explain the stages of mitosis and its significance in cell division.
Answer: (Your detailed response)
Question: Discuss the impact of human activities on the environment, focusing on deforestation.
Answer: (Your detailed response).
