UPSC Exam > UPSC Videos > Botany Optional for UPSC > Ethylene - Plant Growth Hormone
Ethylene - Plant Growth Hormone Video Lecture | Botany Optional for UPSC
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FAQs on Ethylene - Plant Growth Hormone Video Lecture - Botany Optional for UPSC
| 1. What is ethylene and how does it function as a plant growth hormone? |  |
Ans. Ethylene is a gaseous plant hormone that plays a crucial role in regulating various aspects of plant growth and development. It is involved in processes such as fruit ripening, flower wilting, and leaf fall. Ethylene influences cell division and elongation, promoting the maturation of fruits and triggering the senescence of leaves and flowers.
| 2. What are the key roles of ethylene in plant development? | |
Ans. Ethylene has several key roles in plant development, including promoting fruit ripening, regulating flower opening and wilting, facilitating leaf abscission (the shedding of leaves), and influencing the response to stress conditions. It also plays a vital role in seed germination and root growth.
| 3. How do plants produce ethylene, and what factors influence its production? | |
Ans. Plants produce ethylene through the conversion of the amino acid methionine via the ethylene biosynthesis pathway. Factors that influence ethylene production include environmental stresses (such as drought, flooding, and mechanical injury), developmental cues (like fruit ripening), and the presence of certain pathogens.
| 4. What are the applications of ethylene in agriculture and horticulture? | |
Ans. Ethylene is widely used in agriculture and horticulture for its ability to promote uniform ripening of fruits, enhance flower opening, and induce the shedding of unwanted fruits or leaves. It is also used in the post-harvest treatment of fruits to improve their storage life and quality.
| 5. Can ethylene have negative effects on plants? If so, what are they? | |
Ans. Yes, while ethylene is essential for many plant processes, excessive ethylene production can lead to negative effects such as premature senescence, reduced shelf life of fruits, and increased susceptibility to diseases. It can also negatively affect the growth of some plants by inhibiting seed germination and root development.
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Nov 22, 2024 Last updated |
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