1. The mine is serpentine and located in the upper epidermis and mesophyll . 2. After overwintering, the larvae begin feeding on the mesophyll in March. 3. They then feed on the green tissues or the green mesophyll layer. 4. In mesophyll chloroplasts, which do not synthesize sugars, lack starch granules. 5. Crystals of calcium oxalate are in the leaf mesophyll . 6. Most of the mesophyll cells fold their cell wall in response to desiccation. 7. They feed on the mesophyll from the inner side of the rolled leaf. 8. Beneath the palisade mesophyll are the spongy mesophyll cells, which also perform photosynthesis. 9. Beneath the palisade mesophyll are the spongy mesophyll cells, which also perform photosynthesis. 10. They ate one surface and mesophyll of the leaf, leaving the other epidermis.
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