Concept:The vascular tissues, xylem and phloem, are found in the veins of a leaf, especially in the midrib.
Explanation:The midrib is the large central vein of a dicot leaf.
It contains the vascular bundle, which is made up of xylem and phloem.
Xylem transports water and dissolved minerals to the leaf.
Phloem transports food made by photosynthesis to other plant parts.
Therefore, the labelled part that contains both xylem and phloem is the midrib.
Answer:Option C. III
