DSSSB TGT/PGT/PRT Exam > DSSSB TGT/PGT/PRT Questions > Which of the following pigments is associated...
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Which of the following pigments is associated with the germination of seeds?
- a)Phytochrome
- b)Plastocyanin
- c)Chlorophyll
- d)Xanthophyll
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Which of the following pigments is associated with the germination of ...
Role of Phytochrome in Seed Germination
Seed germination is a crucial phase in the life cycle of plants, and it is influenced by various environmental factors, particularly light. Among the pigments involved in this process, phytochrome plays a significant role.
What is Phytochrome?
- Phytochrome is a photoreceptor pigment found in plants that detects light.
- It exists in two interconvertible forms: Pr (red-light-absorbing) and Pfr (far-red-light-absorbing).
How Phytochrome Affects Germination:
- Light Detection: Phytochrome helps seeds detect light conditions. The transition from the Pr form to the Pfr form occurs upon exposure to red light, initiating the germination process.
- Signal Transduction: When seeds absorb light, phytochrome triggers a cascade of biochemical events that lead to the activation of genes responsible for growth and development.
- Hormonal Regulation: Phytochrome influences the production of hormones like gibberellins, which promote seed germination and growth by breaking dormancy.
Conclusion
In summary, option 'A', phytochrome, is integral to the germination of seeds due to its role as a light sensor and its involvement in the hormonal and genetic pathways that facilitate this vital process. It allows seeds to germinate at the right time, ensuring better survival and growth in their environment.
Seed germination is a crucial phase in the life cycle of plants, and it is influenced by various environmental factors, particularly light. Among the pigments involved in this process, phytochrome plays a significant role.
What is Phytochrome?
- Phytochrome is a photoreceptor pigment found in plants that detects light.
- It exists in two interconvertible forms: Pr (red-light-absorbing) and Pfr (far-red-light-absorbing).
How Phytochrome Affects Germination:
- Light Detection: Phytochrome helps seeds detect light conditions. The transition from the Pr form to the Pfr form occurs upon exposure to red light, initiating the germination process.
- Signal Transduction: When seeds absorb light, phytochrome triggers a cascade of biochemical events that lead to the activation of genes responsible for growth and development.
- Hormonal Regulation: Phytochrome influences the production of hormones like gibberellins, which promote seed germination and growth by breaking dormancy.
Conclusion
In summary, option 'A', phytochrome, is integral to the germination of seeds due to its role as a light sensor and its involvement in the hormonal and genetic pathways that facilitate this vital process. It allows seeds to germinate at the right time, ensuring better survival and growth in their environment.
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Community Answer
Which of the following pigments is associated with the germination of ...
Phytochrome is a protein pigment. It encourages germination of seeds. It is the presence of light that is synthesized in seeds at the time of germination.
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Which of the following pigments is associated with the germination of seeds?a)Phytochromeb)Plastocyaninc)Chlorophylld)XanthophyllCorrect answer is option 'A'. Can you explain this answer? for DSSSB TGT/PGT/PRT 2025 is part of DSSSB TGT/PGT/PRT preparation. The Question and answers have been prepared according to the DSSSB TGT/PGT/PRT exam syllabus. Information about Which of the following pigments is associated with the germination of seeds?a)Phytochromeb)Plastocyaninc)Chlorophylld)XanthophyllCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for DSSSB TGT/PGT/PRT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following pigments is associated with the germination of seeds?a)Phytochromeb)Plastocyaninc)Chlorophylld)XanthophyllCorrect answer is option 'A'. Can you explain this answer?.
Which of the following pigments is associated with the germination of seeds?a)Phytochromeb)Plastocyaninc)Chlorophylld)XanthophyllCorrect answer is option 'A'. Can you explain this answer? for DSSSB TGT/PGT/PRT 2025 is part of DSSSB TGT/PGT/PRT preparation. The Question and answers have been prepared according to the DSSSB TGT/PGT/PRT exam syllabus. Information about Which of the following pigments is associated with the germination of seeds?a)Phytochromeb)Plastocyaninc)Chlorophylld)XanthophyllCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for DSSSB TGT/PGT/PRT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following pigments is associated with the germination of seeds?a)Phytochromeb)Plastocyaninc)Chlorophylld)XanthophyllCorrect answer is option 'A'. Can you explain this answer?.
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