Why would the cells of the palisades layer have more chloroplasts in them

Because they re located in the leaves, the part of the plan with wider area to receive the sunlight

Explanation:

Palisade cells are the plant cells that contain the largest amount of chloroplast per cell, this is convenient because they can be found on leaves, the portion of the plant with a wider superficial area, this means that a larger number of chloroplasts will receive the sunlight and therefore this will benefit the photosynthesis process.

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thinking it would be physical characteristics