waec model questions vol1 2025 biology | Essay

Are you preparing for waec model questions vol1 exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2025 biology (Essay) questions designed to simulate the real exam environment.

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Question 1
Describe the structure of a typical plant cell and explain the functions of its various organelles. Include a labelled diagram to illustrate your answer.
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Question 2
Explain the process of mitosis in eukaryotic cells, detailing each phase and its significance. Include a labelled diagram to support your explanation.
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Question 3
Discuss the importance of nutrition in human health, emphasizing the roles of carbohydrates, proteins, fats, vitamins, and minerals in maintaining physiological functions. Include the consequences of malnutrition and the significance of a balanced diet.
Question Parts
(a)
Define nutrition and explain its significance in human health.
(b)
Describe the roles of carbohydrates, proteins, and fats in the human body. Include at least two examples for each macronutrient.
(c)
Explain the functions of vitamins and minerals in the body, and discuss the potential health issues arising from their deficiencies.
(d)
Discuss the consequences of malnutrition and the importance of maintaining a balanced diet for overall health.
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Question 4
Discuss the process of respiration in living organisms, highlighting the differences between aerobic and anaerobic respiration. Include a labelled diagram to illustrate the key components involved in aerobic respiration.
Question Parts
(a)
Define respiration and explain its significance in living organisms.
(b)
Compare and contrast aerobic and anaerobic respiration in terms of their processes, products, and energy yield.
(c)
Using the labelled diagram provided, explain the role of mitochondria in aerobic respiration.
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Question 5
Discuss the process of transport in plants, highlighting the roles of xylem and phloem in water and nutrient movement. Include a comparison between active and passive transport mechanisms, and explain how these processes are vital for plant survival.
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Question 6
Explain the excretion process in humans, detailing the roles of the kidneys, liver, and skin. Discuss how these organs work together to maintain homeostasis and the significance of excretion in overall health.
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Question 7
Discuss the concept of homeostasis in living organisms. In your answer, explain the importance of homeostasis, the mechanisms involved in maintaining homeostasis, and provide examples of homeostatic processes in humans.
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Question 8
Explain the role of coordination in living organisms. In your response, discuss the different types of coordination systems, their components, and provide examples of how these systems function in both plants and animals.
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