What is the importance of tropism
Answers
Answer:
This tropism is important in plants for protection against drought conditions through positive hydrotropism and against water over-saturation through negative hydrotropism. It is especially important for plants in arid biomes to be able to respond to water concentrations. Moisture gradients are sensed in plant roots.
Answer:
A tropism is a biological phenomenon, indicating growth or turning movement of a biological organism, usually a plant, in response to an environmental stimulus. In tropisms, this response is dependent on the direction of the stimulus . Viruses and other pathogens also affect what is called "host tropism", "tissue tropism", or "cell tropism"; in which case tropism refers to the way in which different viruses/pathogens have evolved to preferentially target specific host species, specific tissue, or specific cell types within those species. Tropisms are usually named for the stimulus involved (for example, a phototropism is a reaction to sunlight) and may be either positive (towards the stimulus) or negative (away from the stimulus).
Tropisms occur in three sequential steps.
- First, there is a sensation to a stimulus, which is usually beneficial to the plant.
- Next, signal transduction occurs.
- finally, the directional growth response occurs
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