If a germinating seed is attached horizontally to a revolving klinostat, what would be the...

WAEC 2024

If a germinating seed is attached horizontally to a revolving klinostat, what would be the effect on the seedling after three days? The

A. plumule will curve vertically upward while the radicle will not show any curvature
B. radicle will curve towards the ground while the plumule will not show any curvature.
C. plumule and radicle will not show any curvature.
D. plumule will curve vertically upwards while the radicle will curve towards the ground

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Correct Answer: Option C

Explanation

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.

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