Jeremy is observing a cross-section of a corn stem under the microscope. he observes that there is no vascular cambium present in this stem. why is there no vascular cambium in corn stems?

Vascular cambium is a the tissue which is present in between the xylem and phloem. Te cells of vascular cambium divide to form secondary vascular structure, which is not a feature of the monocots like corn. Secondary vascular structures are true to dicots and do not carry water or minerals, rather increase thickness of the plant.

Its either a) or b),wind and water erosion gradually widen the canyon