Articles > Leaves – Quiz Leaves – Quiz Quiz Choose the best answer. 1. Leaves are the plant's major photosynthetic organ. True False 2. Most monocot plants have netted leaf venation whereas most dicot plants have parallel leaf venation. True False 3. Stomata are leaf openings in the mesophyll layer. True False 4. In arid regions, the plants generally have succulent leaves, denser hairy coverings, and sunken stomata to reduce moisture loss. True False 5. Abscission occurs only in deciduous trees. True False Send Your Results (Optional) Your Name To Email Time's up