Question

Which part is called negative and positive in chemotropism?

Answer 1

In plant biology, any type of 'tropism' is a plant's physical response to some sort of external stimuli. The response is typically movement of some sort.

Chemotropism is a form of tropism whereby the plant’s organism grows in response to a chemical stimulus. According to botanists, plants can display both negative and positive chemotropisms.

In fact, studies have shown that some plants tend to turn away from poor-quality soil and face better growing conditions instead, suggesting a form of chemical sensing in the root and stem system.

Answer 2

Chemotropism is growth of organisms such as bacteria and plants, navigated by chemical stimulus from outside of the organism or organism's part.

The response of the organism or organism part is termed ‘positive’ if the growth is towards the stimulus, or ‘negative’ if the growth is away from the stimulus.

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