Final answer:
If the plant didn't have meristematic tissue, it would not be able to grow in length.
Step-by-step explanation:
If the plant didn't have meristematic tissue, it would not be able to grow in length (option c). Meristematic tissue is responsible for cell division and contributes to the growth of the plant. Without meristematic tissue, the plant would not be able to develop new cells and elongate its stems and roots.