If a germinating seed is attached horizontally to a revolving klinostat, the seedling will grow in a random or unpredictable direction, rather than the upward direction towards light (phototropism) or downward direction towards gravity (geotropism). This is because the klinostat constantly rotates, eliminating any consistent gravitational or light direction. As a result, the seedling's growth will not be influenced by these environmental cues, leading to a more disordered growth pattern, making the plumule and the radicle not showing any curvature.