10 Questions
Define hydrotropism and explain the difference between positive and negative hydrotropism.
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.
How does the plant recognize signals for hydrotropism?
The plant recognizes these signals at the root cap region and sends the signals later to the elongated portion of the root.
What is the difference between hydrotropism and gravitropism in terms of their influence on root growth?
Hydrotropism does not have as much influence on root growth as gravitropism.
What are orthotropic movements in plants?
Orthotropic movements are tropic movements that are directed toward the stimulus source.
What are plagiotropic movements in plants?
Plagiotropic movements are angular to the direction of the stimulus.
What are diatropic movements in plants?
Diatropic movements are perpendicular to the direction of the stimulus.
Define heliotropism and explain the difference between positive and negative heliotropism.
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.
How is heliotropism different from phototropism?
Heliotropism is different from phototropism as the stimulus source for heliotropism is any light, not just sunlight.
What is thermotropism?
Thermotropism is a type of tropism where a part of an organism shows movement response to temperature changes.
What is electrotropism and what are some cell types that show electrotropism?
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.
Quiz: Understanding the Role of Proteins in Tropic Growth in Plants Test your knowledge on the protein and co-receptors responsible for initiating the signal transduction pathway that controls gene expression in plants. Learn about the activation of plasma membrane proton pumps and cell wall loosening enzymes, which contribute to directional tropic growth.
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