JAMB Biology 2025 Objective — Question 11
Question 11 of 40 from the Joint Admissions and Matriculation Board (JAMB) Biology 2025 Objective paper, with the correct answer and a full explanation.
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Which part of a leaf contains the highest concentration of chloroplasts and is primarily responsible for photosynthesis?
- A. Spongy mesophyll
- B. Palisade mesophyllCorrect
- C. Lower epidermis
- D. Guard cells
Explanation
The palisade mesophyll layer contains the highest concentration of chloroplasts and is primarily responsible for photosynthesis. This layer is located just beneath the upper epidermis and is rich in chloroplasts to maximize the absorption of light energy for photosynthesis.
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