Question : The upward and downward growth of shoots and roots, respectively, in response to the pull of gravity is called_____________.
Option 1: phototropism
Option 2: geotropism
Option 3: hydrotropism
Option 4: chemotropism
Correct Answer: geotropism
Solution : The correct option is geotropism .
The upward growth of shoots and the downward growth of roots in response to the pull of gravity is known as geotropism. Specifically, shoots exhibit negative geotropism (growing against gravity), while roots display positive geotropism (growing towards gravity). This phenomenon allows plants to optimize their growth patterns to gravitational forces.
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