If you were looking for bundle sheath cells in a leaf, you would usually find them forming a layer next to the upper epidermis.

Question

Quizplus · Accepted Answer

Bundle sheath cells are typically found surrounding the vascular bundles (xylem and phloem) in the leaf, not next to the upper epidermis. They are more internally located, playing a crucial role in the C4 photosynthetic pathway by concentrating CO2 around the enzyme Rubisco.

If You Were Looking for Bundle Sheath Cells in a Leaf