1. Leaf base - the base of the leaf where it attaches to the stem
2. Petiole - the stalk that connects the leaf blade to the stem
3. Leaf-blade - the broad, flat part of the leaf
4. Axil - the angle between the leaf petiole and the stem
5. Tip - the uppermost point of the leaf blade
6. Margin - the edge of the leaf blade
7. Midrib - the central vein running down the middle of the leaf
8. Stem - the main axis of the plant that supports the leaves
9. Vein - the vascular tissue within the leaf blade that transports water and nutrients
Parent Tip: Review the logic above to help your child master the concept of 7th grade science worksheet with answer key.