HORTICULTURE

Detailed explanation-1: -Darwin realized that the root tip functions as a sensory organ, and that its role is of paramount importance not only for root growth but also for growth and development of the entire plant.

Detailed explanation-2: -Plant root tips have a layer of cells that function together to grow rapidly to allow the plant to increase the plant’s ability to reach water and stabilize in the ground.

Detailed explanation-3: -Explanation: an organ is a group of different tissue connected together to perform a main function and this applies to roots where we have the epidermal layer, the cortex and the vascular tissues, each of which is a tissue.

Detailed explanation-4: -Apical meristems contain meristematic tissue located at the tips of stems and roots, which enable a plant to extend in length.