A plant has a genetic defect that causes its leaves to dry out, becoming brittle and prone to injuries. The genetic defect most likely causes each leaf to lack a .

the generic effect most likely causes each leaf to lack a sufficient root system that can support the plant's growth

A plant has a genetic defect that causes its leaves to dry out, becoming brittle and prone to injuries. The genetic defect most likely causes each leaf to lack a CUTICLE

Explanation:

The cuticle is the part of the cell (the waxy, water-repellant layer) that prevents injury and water loss

because photosynthesis could not occur (apex)