Practice IB Biology Topic 2.9 Photosynthesis with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for 2.9 Photosynthesis and mirrors Paper 1A, 1B, 2 style where relevant.
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Which carbon compound produced by living organisms is inorganic?
Which of the following processes occurs during the light-dependent reactions of photosynthesis?
How is oxygen produced during photosynthesis?
Draw and label a diagram of the carbon cycle.
Outline the effect of carbon dioxide concentration on the rate of photosynthesis and how this can be measured by carbon dioxide uptake.
Explain how carbon dioxide is produced in anaerobic and in aerobic respiration.
Compare and contrast the mode of nutrition of detritivores and saprotrophs.
| Detritivores | Saprotrophs | |
|---|---|---|
| Similarity | ||
| Difference |
Draw a food chain from this food web, showing at least three organisms.
Explain the reasons for food chains rarely containing more than four or five trophic levels.
The amount of food passing into food chains can be affected by the rate of photosynthesis. Explain the effect of one limiting factor on photosynthesis.
All of the leaves in the image are from Solanum, a wild genus of tomato.
State one cause of variation in a plant such as the tomato.