In a transverse section of a plant organ the following features are seen.
A. Vascular bundles are surrounded by bundle sheath.
B. More stomata in the lower epidermis than upper epidermis.
C. The vascular bundle has adaxial xylem and abaxial phloem. 
D. Below the upper epidermis elongated green cells with several chloroplasts in each cell.
Identify the plant and organ of the plant.

It is leaf of dicots such as sunflower. It has upper and lower epidermis with few stomata in the upper epidermis and more stomata in the lower epidermis. It has upper palisade tissue with elongated compactly arranged cells having many chloroplasts and lower spongy tissue with oval or spherical loosely arranged cells having few chloroplasts. Each vascular bundle is surrounded by parenchymatous bundle sheath and has upper xylem and lower phloem