Photosynthesis exam questions
Exam-style Photosynthesis questions with worked solutions, step-by-step methods and common student mistakes. Practice for Biology and other qualifications.
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Try these Photosynthesis questions
Answer ALL questions. Write your answers in the spaces provided.
Write the word equation for photosynthesis.
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carbon dioxide + water → glucose + oxygen (using light energy absorbed by chlorophyll).
(Total for Question 1 is 2 marks)
Explain why increasing light intensity increases the rate of photosynthesis only up to a certain point.
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At first light is the limiting factor, so more light means a faster rate. Beyond a certain intensity another factor (such as carbon dioxide concentration or temperature) becomes limiting, so the rate levels off.
(Total for Question 2 is 3 marks)
Question and worked solution
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