Question

What is HydroTropism​

Answer 1

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What is Hydrotropism ?

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Involuntary orientation by an organism, that involves turning or curving as a positive or negative response to a stimulus"

[1] is a plant's growth response in which the direction of growth is determined by a stimulus or gradient in water concentration.

A common example is a plant root growing in humid air bending toward a higher relative humidity level.

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This is of biological significance as it helps to increase efficiency of the plant in its ecosystem.

The process of hydrotropism is started by the root cap sensing water and sending a signal to the elongating part of the root.

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• Hydrotropism is difficult to observe in underground roots .
• since the roots are not readily observable .
• And root gravitropism is usually more influential than root hydrotropism.

• Water readily moves in soil and soil water content is constantly changing so any gradients in soil moisture are not stable.

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Answer 2

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The movement of plant parts in response to water is known as hydrotropism.

An example of hydrotropism is the movement of plant roots towards water. It is a positive hydrotropism because the roots move towards the stimulus.

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