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From among the situations given below, choose the one that Prevents autogamy and geitonogamy
- a)Monecious plant bearing unisexual flowers
- b)Dioecious plant bearing only male or female flowers
- c)Moneecious plant with besexual flowers
- d)Dioecious plant with bisexual flowers
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
From among the situations given below, choose the one that Prevents au...
Autogamy (same flower); geitonogamy (different flowers of same plants; xenogamy (different plant’s flower).
Dioecious plant bearing only male or female flowers prevents both autogamy and geitonogamy.
Dioecious plant bearing only male or female flowers prevents both autogamy and geitonogamy.
Most Upvoted Answer
From among the situations given below, choose the one that Prevents au...
Preventing Autogamy and Geitonogamy
Dioecious plants are those in which male and female flowers are borne on separate plants. This characteristic prevents both autogamy and geitonogamy.
Autogamy is the process of self-fertilization, where the pollen from the same flower or plant fertilizes its own ovules. This can lead to inbreeding depression, where the offspring suffer from reduced genetic diversity and fitness.
Geitonogamy is the process of cross-fertilization between flowers on the same plant. While this can increase genetic diversity, it can also lead to competition among the offspring for resources and space.
Why Dioecious Plants Prevent Autogamy and Geitonogamy?
Dioecious plants prevent both autogamy and geitonogamy by having separate male and female plants. Since the male and female flowers are not present on the same plant, they cannot self-fertilize or cross-fertilize with other flowers on the same plant.
This ensures that the offspring produced are genetically diverse and have a better chance of survival. It also prevents the accumulation of deleterious mutations that can result from prolonged self-fertilization.
In contrast, monoecious plants have both male and female flowers on the same plant. While this can increase the chances of cross-fertilization, it also increases the chances of self-fertilization and geitonogamy.
Monecious plants with unisexual flowers face the same problem as monoecious plants, as the flowers are still present on the same plant.
Conclusion
Dioecious plants prevent autogamy and geitonogamy by having separate male and female plants. This ensures genetic diversity and reduces the chances of inbreeding depression.
Dioecious plants are those in which male and female flowers are borne on separate plants. This characteristic prevents both autogamy and geitonogamy.
Autogamy is the process of self-fertilization, where the pollen from the same flower or plant fertilizes its own ovules. This can lead to inbreeding depression, where the offspring suffer from reduced genetic diversity and fitness.
Geitonogamy is the process of cross-fertilization between flowers on the same plant. While this can increase genetic diversity, it can also lead to competition among the offspring for resources and space.
Why Dioecious Plants Prevent Autogamy and Geitonogamy?
Dioecious plants prevent both autogamy and geitonogamy by having separate male and female plants. Since the male and female flowers are not present on the same plant, they cannot self-fertilize or cross-fertilize with other flowers on the same plant.
This ensures that the offspring produced are genetically diverse and have a better chance of survival. It also prevents the accumulation of deleterious mutations that can result from prolonged self-fertilization.
In contrast, monoecious plants have both male and female flowers on the same plant. While this can increase the chances of cross-fertilization, it also increases the chances of self-fertilization and geitonogamy.
Monecious plants with unisexual flowers face the same problem as monoecious plants, as the flowers are still present on the same plant.
Conclusion
Dioecious plants prevent autogamy and geitonogamy by having separate male and female plants. This ensures genetic diversity and reduces the chances of inbreeding depression.
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From among the situations given below, choose the one that Prevents autogamy and geitonogamya)Monecious plant bearing unisexual flowersb)Dioecious plant bearing only male or female flowersc)Moneecious plant with besexual flowersd)Dioecious plant with bisexual flowersCorrect answer is option 'B'. Can you explain this answer?
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