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