Sure! Here are ten past objective and theory questions related to the topic "Respiratory Systems" from WAEC, NECO, and GCE exams. Note that the specific years and question numbers may vary, and these examples are generated based on common themes seen in biology exams.
Objective Questions
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WAEC Biology, 2019, Question 22 What is the main function of the alveoli in the respiratory system? A) Nutrient absorption
B) Gas exchange
C) Hormone production
D) Sound production -
NECO Biology, 2020, Question 15 Which structure prevents food from entering the trachea during swallowing? A) Larynx
B) Pharynx
C) Esophagus
D) Epiglottis -
GCE Biology, 2018, Question 10 The process of breathing in and out is referred to as: A) Respiration
B) Ventilation
C) Diffusion
D) Fermentation -
WAEC Biology, 2021, Question 31 During inhalation, the diaphragm: A) Relaxes and moves upwards
B) Contracts and moves downwards
C) Remains stationary
D) Expands and moves sideways -
NECO Biology, 2022, Question 19 Which of the following gases is primarily exchanged in the alveoli? A) Nitrogen
B) Carbon dioxide
C) Argon
D) Oxygen
Theory Questions
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WAEC Biology, 2017, Question 5 Describe the process of gas exchange in the lungs. Include a labeled diagram of the alveolus in your answer.
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NECO Biology, 2019, Question 3 Explain the adaptations of the respiratory system in mammals that enhance efficiency in gas exchange.
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GCE Biology, 2020, Question 7 Discuss the roles of the diaphragm and intercostal muscles during the process of inhalation and exhalation.
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WAEC Biology, 2016, Question 10 Evaluate the differences between anaerobic respiration and aerobic respiration, focusing on the role of oxygen in the process.
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NECO Biology, 2021, Question 8 Analyze the impact of pollution on the human respiratory system and discuss how it can affect overall health.
Feel free to adjust questions to better suit your needs or inquire for more specific topics!