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Questions and Answers
Which group of compounds is recognized as triggering substances for plant growth regulation?
Which group of compounds is recognized as triggering substances for plant growth regulation?
- Auxins, Cytokinins, Phenolics (Ethylene), and Abscisic Acid
- Auxins, Gibberellins, Phenolics (Ethylene), and Abscisic Acid (correct)
- Auxins, Gibberellins, Cytokinins, and Phenolics (Ethylene)
- Auxins, Cytokinins, Gibberellins, and Phenolics (Ethylene)
Which plant growth regulator contains nitrogen?
Which plant growth regulator contains nitrogen?
- Cytokinin
- Phenolics (Ethylene)
- Gibberellins
- Auxin (correct)
What are the uses of plant growth regulators in agriculture?
What are the uses of plant growth regulators in agriculture?
- Regulating light and temperature exposure for plants
- Inhibiting plant growth only
- Stimulating plant growth only
- Modifying physiological processes in plants (correct)
Which environmental factors interact with phytohormones and biochemical processes during plant growth and differentiation?
Which environmental factors interact with phytohormones and biochemical processes during plant growth and differentiation?
What changes in growth patterns lead to the formation of roots, shoots, leaves, flowers, and other structural characteristics of the plant?
What changes in growth patterns lead to the formation of roots, shoots, leaves, flowers, and other structural characteristics of the plant?
What is the role of hormones in plants?
What is the role of hormones in plants?
How do growth regulators act in plant cells?
How do growth regulators act in plant cells?
What effect does auxin have on root initiation?
What effect does auxin have on root initiation?
How does auxin influence vascular tissue differentiation in plants?
How does auxin influence vascular tissue differentiation in plants?
What is the primary function of auxin in fruit growth?
What is the primary function of auxin in fruit growth?
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Study Notes
Plant Growth Regulators
- Hormones are recognized as triggering substances for plant growth regulation.
- Auxin is a plant growth regulator that contains nitrogen.
Agricultural Applications
- Plant growth regulators are used in agriculture to enhance crop yields, improve plant architecture, and increase resistance to environmental stresses.
Environmental Interactions
- Environmental factors such as light, temperature, and water interact with phytohormones and biochemical processes during plant growth and differentiation.
Plant Development
- Changes in growth patterns lead to the formation of roots, shoots, leaves, flowers, and other structural characteristics of the plant.
- Hormones play a crucial role in regulating these growth patterns and developmental processes.
Hormonal Roles
- Hormones regulate plant growth and differentiation by controlling cell elongation, cell division, and differentiation.
- Auxin, in particular, promotes cell elongation and differentiation in plants.
Mechanism of Action
- Growth regulators act in plant cells by binding to specific receptors, triggering signaling pathways that regulate gene expression and cellular responses.
Auxin Effects
- Auxin promotes root initiation by stimulating cell division and differentiation in the root meristem.
- Auxin influences vascular tissue differentiation in plants by inducing the formation of xylem and phloem tissues.
- The primary function of auxin in fruit growth is to promote cell expansion and differentiation, leading to increased fruit size and quality.
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