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Questions and Answers
Which of the following is a synthetic analogue of phyto-hormones?
What is the role of Nitric oxide in plant growth?
How do plant hormones act?
What are the characteristics of Animal Hormones (AH) compared to Plant Hormones (PH)?
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Which hormones are decentralized in their regulation?
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Which of the following hormones is a synthetic analogue of phyto-hormones?
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Which hormone is involved in many plant processes initiation?
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In the regulation of which hormones is the effect dependent on the interaction of other hormones?
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Which type of hormones are mostly large molecules such as peptides & proteins?
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Which hormones are synthesized either throughout the plant body or in specific locations?
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Which hormone is not a synthetic analogue of phyto-hormones?
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In the regulation of which hormones is the effect dependent on the interaction of other hormones?
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Which type of hormones are mostly large molecules such as peptides & proteins?
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Which hormone acts at a distance but certain times has localized targets?
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Which hormone is involved in the response of plants to stress situations?
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Which of the following is an example of a non-synthetic growth regulator mentioned in the text?
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What is the role of Jasmonates in plant growth, as per the text?
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How do plant hormones differ from animal hormones, based on the text?
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In the context of plant growth, what is the sequence of events in response to a stimulus, as per the text?
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What is the decentralized regulation of plant hormones referred to in the text?
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Study Notes
Synthetic Analogues of Phyto-Hormones
- Synthetic analogues imitate natural plant hormones, enhancing growth and development.
- An example of a synthetic analogue is a growth regulator that promotes cell division.
Role of Nitric Oxide in Plant Growth
- Nitric oxide functions as a signaling molecule influencing processes like seed germination and root development.
- It participates in the regulation of vascular tissue development and stress responses.
Mechanism of Action of Plant Hormones
- Plant hormones interact with specific receptors, triggering a cascade of physiological responses.
- They can induce changes at the cellular level, affecting growth, development, and stress adaptation.
Characteristics of Animal Hormones vs. Plant Hormones
- Animal hormones often exist as larger molecules, such as peptides and proteins, while plant hormones tend to be smaller and more diverse.
- Animal hormones usually act on specific target organs, whereas plant hormones can have systemic effects throughout the plant.
Decentralized Regulation of Hormones
- Some plant hormones, such as auxins and cytokinins, show decentralized regulation, affecting various plant functions in different tissues.
- Their effects are finely tuned through interactions among multiple hormones.
Hormones Involved in Plant Processes
- Gibberellins play a crucial role in initiating various growth processes like seed germination and stem elongation.
- Other hormones, like ethylene, influence growth responses during ripening and stress.
Interaction and Regulation of Hormones
- The effects of certain hormones, like auxins and cytokinins, depend on the specific interplay with other hormones, determining plant responses to stimuli.
Size and Composition of Hormones
- Most hormones categorized as peptides and proteins are large molecules, participating in signaling pathways within plants.
Synthesis of Hormones
- Some hormones are synthesized throughout the plant body (e.g., ethylene), while others are produced in specific locations depending on developmental conditions.
Non-Synthetic Growth Regulators
- Naturally occurring growth regulators, such as auxins and gibberellins, are examples of non-synthetic regulators that influence plant growth and development.
Role of Jasmonates in Plant Growth
- Jasmonates are key for stress response, regulating defenses against herbivores and pathogens while influencing growth and development.
Sequence of Events in Plant Response to Stimulus
- Plant responses typically follow a sequence: stimulus detection, hormone release, signal transduction, and physiological response.
Decentralized Regulation of Plant Hormones
- Decentralized regulation allows for a flexible response mechanism, with plant hormones influencing one another to adapt to various environmental conditions.
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Description
Test your knowledge of plant growth regulators with this quiz. Explore the synthetic analogues of phyto-hormones and other regulators like calcium, polyamines, jasmonates, nitric oxide, and malate. See how plants respond to these regulators and enhance your understanding of plant growth processes.
