Question

when a plant grows as mediated by growth hormones, which main plant organs are at work? meristem and roots stems and leaves roots and stem leaves and roots

Explanation:

Meristems are the primary plant tissues where growth hormone-mediated cell division and elongation occur, as they contain undifferentiated cells. Roots also play a key role: root apical meristems drive root growth, and roots produce/transport growth hormones (like auxins) that regulate overall plant growth. Other organs like stems and leaves rely on signals and growth initiated by meristems and roots.

Answer:

meristem and roots