Protein Role in Tropic Growth

Hydrotropism is a form of tropism where an organism or a cell shows growth or movement in response to water or moisture. Positive hydrotropism is when the growth response is toward water, while negative hydrotropism is when it responds away from water.

The plant recognizes these signals at the root cap region and sends the signals later to the elongated portion of the root.

Hydrotropism does not have as much influence on root growth as gravitropism.

<p>Orthotropic movements are tropic movements that are directed toward the stimulus source.</p> Signup and view all the answers

<p>Plagiotropic movements are angular to the direction of the stimulus.</p> Signup and view all the answers

<p>Diatropic movements are perpendicular to the direction of the stimulus.</p> Signup and view all the answers

<p>Heliotropism is a type of tropism where the response of the organism is toward sunlight. Positive heliotropism is when the organism responds toward the sunlight, while negative heliotropism is when it responds away from the sunlight.</p> Signup and view all the answers

<p>Heliotropism is different from phototropism as the stimulus source for heliotropism is any light, not just sunlight.</p> Signup and view all the answers

<p>Thermotropism is a type of tropism where a part of an organism shows movement response to temperature changes.</p> Signup and view all the answers

<p>Electrotropism is a type of tropism exhibited by an organism as a response to the electric field. Neurons, myocytes, epithelial cells, fibroblasts, spores, pollen tubes, and green algae are some cells that have shown growth or migration when exposed to the external electric field.</p> Signup and view all the answers