What is the main function of cortical tissue in plants?

Cortical tissue in plants primarily functions as a storage area for food and water. Located between the outer layer (epidermis) and the inner tissues (vascular tissues), the cortex plays a vital role in the storage of starches and other carbohydrates, as well as water, which can be utilized by the plant during growth and development.

This storage capacity is crucial for plants, particularly in conditions where resources may be scarce or during periods of dormancy. By retaining food and water, cortical tissue supports the plant's energy needs and aids in maintaining hydration, especially in times of drought or stress.

Additionally, while the cortex may have some structural roles, particularly in larger plants, its primary function is not direct structural support but rather to serve as a reservoir of essential nutrients and moisture. Thus, the storage function accurately reflects the main role of cortical tissue within plant systems.