Numerical: Leaf Surface Area
A compound leaf has 12 leaflets each with an average area of 15 cm². What is the total photosynthetic surface area contributed by the leaflets?
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About This Question
- Subject
- biology
- Chapter
- structural organisation in animals and plants
- Topic
- numerical: leaf surface area
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
180 cm²
- Compound Leaf: A leaf where the blade is divided into multiple distinct leaflets.
- Total Area Calculation: The total surface area available for photosynthesis is the sum of the areas of all leaflets.
- Identify Given Values:
- Number of Leaflets = 12.
- Average Area per Leaflet = 15 cm2.
- Calculation:
- Total Area=12×15
- 12×10=120
- 12×5=60
- Total Area=120+60=180 cm2.
- Conclusion: The total photosynthetic area is 180 cm2.
This medium difficulty biology question is from the chapter structural organisation in animals and plants, covering the topic of numerical: leaf surface area. It appeared in the 2025 exam.
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