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Cross pollination results in hybrid seed formation. Hybrids in general are vigorous than self pollinated plants due to additive gene action.
Eloise Upton
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Why is the stigma a different height than the anthers?
The anthers and stigma occur at different heights to prevent self fertilization and to encourage cross fertilization.
Compare the self pollination and cross pollination?
Self pollination-The transfer of pollen from a male reproductive structure (an anther or male cone) to a female reproductive structure (a stigma or female cone) of the same plant or of the same flower.Self-pollination tends to decrease the genetic diversity (increase the number of homozygous individuals) in a population, and is much less common than cross-fertilization. Many species of plants have evolved mechanisms to promote cross-pollination and avoid self-pollination, though certain plants, such as the pea, regularly self-pollinate.Cross pollination-The transfer of pollen from the male reproductive organ (an anther or a male cone) of one plant to the female reproductive organ (a stigma or a female cone) of another plant.Most plants reproduce by cross-pollination, which increases the genetic diversity of a population (increases the number of heterozygous individuals). Mechanisms that promote cross-pollination include having male flowers on one plant and female flowers on another, having pollen mature before the stigmas on the same plant are chemically receptive to being pollinated, and having anatomical arrangements (such as stigmas that are taller than anthers) that make self-pollination less likely. Insects and wind are the main agents of cross-pollination.
Why cross pollination produces more genetic variation in the offspring than self pollination produces?
Cross-pollination produces more genetic variation in offspring because it is a different set of DNA that is breeding with the parents DNA to produce the offspring (known as sexual reproduction). In asexual reproduction, the parent plant uses a clone DNA to self pollinate thus creating an exact copy of the parent. Asexual reproduction inhibits genetic variation because the offspring will never develop mutations that could help natural selection.
Why does nature prefer cross pollination?
Cross Pollination can give rise to new breeds or new varieties of plant. Another disadvantage of self pollination is that, if there was an unrequired character for the plant, it will be carried over to the new and younger generations. This all what i know. Hope it helped you.
Differentiate cross pollination from self pollination?
Self pollination is where the plant is able to pollinate without another plant. This provides much less variation in the genetics of the species from generation to generation than cross pollination which is where the pollen from one plant is carried to another plant (bees usually do this) and fertilizes the other plant. It creates more genetic diversity because the genes from both plants, which are different, are involved in the forming of the seed, not just the genes from the one self-pollinating plant.--------------------------------------------IMPROVEDSelf pollination is the transfer of pollen from the anther to the stigma of the same flower, another flower on the same plant, or the flower of a plant of the same clone. Cross pollination is the transfer of pollen from the flower of one plant to the flower of a plant having a different genetic constitution.
Why is cross pollination better than self pollinating?
it increases genetic diversity, which improves survivorship of the species
Why is cross-pollination of plants better than self-fertilization?
I have heard they are more disease resistant but I can't say for certain.
Why is the stigma a different height than the anthers?
The anthers and stigma occur at different heights to prevent self fertilization and to encourage cross fertilization.
Can a flower plant have more than one kind of pollination?
No, a flower plant typically has one specific type of pollination method. The method can be either self-pollination or cross-pollination, but a flower is not capable of having multiple types of pollination simultaneously.
Compare the self pollination and cross pollination?
Self pollination-The transfer of pollen from a male reproductive structure (an anther or male cone) to a female reproductive structure (a stigma or female cone) of the same plant or of the same flower.Self-pollination tends to decrease the genetic diversity (increase the number of homozygous individuals) in a population, and is much less common than cross-fertilization. Many species of plants have evolved mechanisms to promote cross-pollination and avoid self-pollination, though certain plants, such as the pea, regularly self-pollinate.Cross pollination-The transfer of pollen from the male reproductive organ (an anther or a male cone) of one plant to the female reproductive organ (a stigma or a female cone) of another plant.Most plants reproduce by cross-pollination, which increases the genetic diversity of a population (increases the number of heterozygous individuals). Mechanisms that promote cross-pollination include having male flowers on one plant and female flowers on another, having pollen mature before the stigmas on the same plant are chemically receptive to being pollinated, and having anatomical arrangements (such as stigmas that are taller than anthers) that make self-pollination less likely. Insects and wind are the main agents of cross-pollination.
Does a flower need a bee even if it can self-pollinate itself?
Generally speaking cross-pollination (moving pollen from the flower of one plant to the flower of another plant) is considered better than self-pollination. Continual self-pollination of plants results in inbreeding (although sometimes a good thing) and very little genetic divergance. This means that populations of inbred plants are less likily to be able to adapt to climatic or environmental change than those which have a large gene pool.
Why cross pollination is better than self pollination?
Advantages: 1. Hybrid vigour is maitained, 2. Chances of aquiring broad genetic base are always there. 3. Process of evolution continues. Dis-advantages: 1. Seed formation always depend on availability of pollinator 2. Lots of variability leades to heterozygocity and inconsistancy in phenotypes. 3. Mixing of inferior genes takes place if pollinators are not controlled.
Why cross-pollination is less likely to happen in this bottle garden than than in an outdoor garden?
if you have an insect in the bottle garden, with the lid shut, it won't be able to breathe/live which means cross-pollination won't happen or is less likely to.
Why do plant species need to promote cross-fertilization rather than self-fertilizationWhy do plant species need to promote cross-fertilization rather than self-fertilization?
Cross fertilization leads to genetic variability which helps in the process of better adaptability and evolution
Why cross pollination produces more genetic variation in the offspring than self pollination produces?
Cross-pollination produces more genetic variation in offspring because it is a different set of DNA that is breeding with the parents DNA to produce the offspring (known as sexual reproduction). In asexual reproduction, the parent plant uses a clone DNA to self pollinate thus creating an exact copy of the parent. Asexual reproduction inhibits genetic variation because the offspring will never develop mutations that could help natural selection.
Why does nature prefer cross pollination?
Cross Pollination can give rise to new breeds or new varieties of plant. Another disadvantage of self pollination is that, if there was an unrequired character for the plant, it will be carried over to the new and younger generations. This all what i know. Hope it helped you.
Why do hybrids that were developed from cross-pollination adapt more to environmental condition than their parent plants?
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