So can the movement of aphids when, having depleted the young leaves on one food plant, their offspring then fly onward to a different host plant, with no one aphid ever returning to where it started.

Rhizobia establish a symbiotic relationship with their host plant ― exchanging nitrogen for nutrients ― by forming nodules, which penetrate the roots and sometimes stems of the plant.

The low-energy bulbs emit a warm luminous glow that supports the photosynthesis process of the accompanying plant, creating a direct relationship between the lamp and host plant.