NEET Exam > NEET Questions > What is correct about self-incompatibility?a...
Start Learning for Free
What is correct about self-incompatibility?
- a)It is due to the non-synchronization of pollen release and stigma receptivity.
- b)It is a genetic mechanism.
- c)It is seen only in unisexual flowers.
- d)It is due to the anther and stigma are placed at different positions.
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
What is correct about self-incompatibility?a)It is due to the non-syn...
Self-incompatibility is a genetic mechanism and prevents self-pollen (from the same flower or other flowers of the same plant) from fertilising the ovules by inhibiting pollen germination or pollen tube growth in the pistil.
Free Test
FREE
| Start Free Test |
Community Answer
What is correct about self-incompatibility?a)It is due to the non-syn...
Genetic Mechanism of Self-Incompatibility
Self-incompatibility is a genetic mechanism that prevents self-fertilization in plants. It involves the recognition and rejection of self-pollen to promote outcrossing, which increases genetic diversity within a population.
Recognition of Self-Pollen
Plants have a genetic system that allows them to distinguish between self and non-self pollen. This recognition process occurs at the molecular level, where specific proteins on the pollen grain interact with proteins on the stigma of the same plant. If the proteins are too similar, the pollen is rejected.
Mechanism of Action
When self-pollen lands on the stigma of a plant that exhibits self-incompatibility, a series of biochemical reactions are triggered, leading to the inhibition of pollen tube growth. This prevents fertilization from occurring, ensuring that only compatible pollen can successfully fertilize the ovule.
Benefits of Self-Incompatibility
Self-incompatibility promotes genetic diversity within a plant population by encouraging outcrossing. This genetic diversity increases the chances of survival and adaptation to changing environmental conditions.
Conclusion
Self-incompatibility is a vital genetic mechanism in plants that plays a crucial role in promoting outcrossing and maintaining genetic diversity. By preventing self-fertilization, plants ensure the health and adaptability of their populations over time.
Self-incompatibility is a genetic mechanism that prevents self-fertilization in plants. It involves the recognition and rejection of self-pollen to promote outcrossing, which increases genetic diversity within a population.
Recognition of Self-Pollen
Plants have a genetic system that allows them to distinguish between self and non-self pollen. This recognition process occurs at the molecular level, where specific proteins on the pollen grain interact with proteins on the stigma of the same plant. If the proteins are too similar, the pollen is rejected.
Mechanism of Action
When self-pollen lands on the stigma of a plant that exhibits self-incompatibility, a series of biochemical reactions are triggered, leading to the inhibition of pollen tube growth. This prevents fertilization from occurring, ensuring that only compatible pollen can successfully fertilize the ovule.
Benefits of Self-Incompatibility
Self-incompatibility promotes genetic diversity within a plant population by encouraging outcrossing. This genetic diversity increases the chances of survival and adaptation to changing environmental conditions.
Conclusion
Self-incompatibility is a vital genetic mechanism in plants that plays a crucial role in promoting outcrossing and maintaining genetic diversity. By preventing self-fertilization, plants ensure the health and adaptability of their populations over time.
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
|
Explore Courses for NEET exam
|
|
Top Courses for NEETView all
What is correct about self-incompatibility?a)It is due to the non-synchronization of pollen release and stigma receptivity.b)It is a genetic mechanism.c)It is seen only in unisexual flowers.d)It is due to the anther and stigma are placed at different positions.Correct answer is option 'B'. Can you explain this answer?
Question Description
What is correct about self-incompatibility?a)It is due to the non-synchronization of pollen release and stigma receptivity.b)It is a genetic mechanism.c)It is seen only in unisexual flowers.d)It is due to the anther and stigma are placed at different positions.Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about What is correct about self-incompatibility?a)It is due to the non-synchronization of pollen release and stigma receptivity.b)It is a genetic mechanism.c)It is seen only in unisexual flowers.d)It is due to the anther and stigma are placed at different positions.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is correct about self-incompatibility?a)It is due to the non-synchronization of pollen release and stigma receptivity.b)It is a genetic mechanism.c)It is seen only in unisexual flowers.d)It is due to the anther and stigma are placed at different positions.Correct answer is option 'B'. Can you explain this answer?.
What is correct about self-incompatibility?a)It is due to the non-synchronization of pollen release and stigma receptivity.b)It is a genetic mechanism.c)It is seen only in unisexual flowers.d)It is due to the anther and stigma are placed at different positions.Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about What is correct about self-incompatibility?a)It is due to the non-synchronization of pollen release and stigma receptivity.b)It is a genetic mechanism.c)It is seen only in unisexual flowers.d)It is due to the anther and stigma are placed at different positions.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is correct about self-incompatibility?a)It is due to the non-synchronization of pollen release and stigma receptivity.b)It is a genetic mechanism.c)It is seen only in unisexual flowers.d)It is due to the anther and stigma are placed at different positions.Correct answer is option 'B'. Can you explain this answer?.
Solutions for What is correct about self-incompatibility?a)It is due to the non-synchronization of pollen release and stigma receptivity.b)It is a genetic mechanism.c)It is seen only in unisexual flowers.d)It is due to the anther and stigma are placed at different positions.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of What is correct about self-incompatibility?a)It is due to the non-synchronization of pollen release and stigma receptivity.b)It is a genetic mechanism.c)It is seen only in unisexual flowers.d)It is due to the anther and stigma are placed at different positions.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
What is correct about self-incompatibility?a)It is due to the non-synchronization of pollen release and stigma receptivity.b)It is a genetic mechanism.c)It is seen only in unisexual flowers.d)It is due to the anther and stigma are placed at different positions.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for What is correct about self-incompatibility?a)It is due to the non-synchronization of pollen release and stigma receptivity.b)It is a genetic mechanism.c)It is seen only in unisexual flowers.d)It is due to the anther and stigma are placed at different positions.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of What is correct about self-incompatibility?a)It is due to the non-synchronization of pollen release and stigma receptivity.b)It is a genetic mechanism.c)It is seen only in unisexual flowers.d)It is due to the anther and stigma are placed at different positions.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice What is correct about self-incompatibility?a)It is due to the non-synchronization of pollen release and stigma receptivity.b)It is a genetic mechanism.c)It is seen only in unisexual flowers.d)It is due to the anther and stigma are placed at different positions.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup