Which structure is responsible for primary and secondary growth in plants?

a) petiole
b) meristem
c) xylem
d) mesophyll

meristems

Explanation:

Apical meristems, that are located at the tips of the roots and shoots, are responsible for primary growth. Secondary growth allows for the plant to grow into thickness. Lateral meristems known as the vascular cambium and cork cambium are responsible for secondary growth.

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