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Questions and Answers
Explain the role of ethylene in fruit ripening.
Explain the role of ethylene in fruit ripening.
Ethylene is a gas released during fruit ripening that causes the cell wall to break down, making the fruit softer, and releases stored sugar, making the fruit sweet. It also accelerates the ripening of other fruits through a chain reaction.
What is the major job of ethylene in plants?
What is the major job of ethylene in plants?
The major job of ethylene in plants is fruit ripening. It acts as a gas that breaks down the cell wall, making the fruit softer, and releases stored sugar, making the fruit sweet. It also accelerates the ripening of other fruits through a chain reaction.
How does ethylene affect the ripening of other fruits?
How does ethylene affect the ripening of other fruits?
When a fruit, such as a banana, ripens and releases ethylene, the gas accelerates the ripening of other fruits placed nearby. This creates a chain reaction, causing the other fruits to release more ethylene and ripen faster.
What mnemonic technique does the speaker suggest for remembering the function of ethylene?
What mnemonic technique does the speaker suggest for remembering the function of ethylene?
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Name one function of auxin in plants.
Name one function of auxin in plants.
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Where is gibberellin concentrated in plants and what does it promote?
Where is gibberellin concentrated in plants and what does it promote?
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How can gibberellin be used to modify the growth of plants?
How can gibberellin be used to modify the growth of plants?
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Explain the major function of gibberellin in plants and provide an example of how its excess can negatively impact plant growth.
Explain the major function of gibberellin in plants and provide an example of how its excess can negatively impact plant growth.
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What is the main role of cytokinin in plants, and how does it contribute to plant growth?
What is the main role of cytokinin in plants, and how does it contribute to plant growth?
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What are the functions of abscisic acid in plants, and how does it contribute to plant survival in challenging environmental conditions?
What are the functions of abscisic acid in plants, and how does it contribute to plant survival in challenging environmental conditions?
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Study Notes
Plant Hormones: Auxin, Gibberellin, Cytokinin, and Abscisic Acid
- Jay Berlin's discovery linked to gibberellin and stem elongation
- Excess gibberellin from fungus caused rice plants to grow taller and die
- Gibberellin's major function is in stem elongation
- Cytokinin's main role is cell division in plants
- Cytokinin responsible for creating new cells, essential for plant growth
- Cytokinin also causes branching to occur in plants
- Cytokinin's name derived from "cell division"
- Abscisic acid is a growth inhibitor in plants
- Abscisic acid's function includes maintaining closed stomata during drought
- Abscisic acid prevents seed germination in certain conditions, e.g., desert
- Abscisic acid's wilting of leaves association is not entirely accurate
- Abscisic acid's name association with "cutting down" and visual mnemonic for remembering its function
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Description
Test your knowledge of plant hormones with this quiz on auxin, gibberellin, cytokinin, and abscisic acid. Learn about their functions, roles, and the discoveries related to their effects on plant growth and development.
