what is pollination and its kinds
Answers
Hi mate
Pollination is the act of transferring pollen grains from the male anther of a flower to the female stigma. The goal of every living organism, including plants, is to create offspring for the next generation. One of the ways that plants can produce offspring is by making seeds. Seeds contain the genetic information to produce a new plant.
Pollination are of two types:
- Self Pollination.
- Cross Pollination.
Self Pollination
Self pollination takes place when the pollen from one flower pollinates the same flower or other flowers of the same individual. Self pollination is a form of pollination which can occur when a flower has both the male and the female gametes, that is the stamens and the carpel or pistil.
Plants pollinate and can produce off-spring that are self-fertile.
Autogamy - Autogamy is the type of self pollination where the pollen is transferred to the stigma of the same flower.
Geitonogamy - It is a process when the pollen is transferred to another flower on the same plant.
Self Pollinating Fruit Trees are Apricots, Figs, few varieties of Peaches, some varieties of Plum like Stanley, Green Gage, Italian Prune and also some varieties of Apple are self pollinating.
Self Pollinating Flowers are Flowers like Rose (Rosa spp.), food crops like beans, peppers tomatoes, Orchids, Violets, Sweet Peas, also self pollinate.
Cross Pollination
Cross pollination is also known as allogamy. Cross Pollination occur when pollen grains are transferred to a flower from a different plant. The plants that undergo cross pollination often have taller stamens than their carpels. They use mechanisms to ensure that the pollen grains are spread to other plants' flowers. The process of cross pollination requires the help of abiotic or biotic agents like wind, water, insects, birds, bats, snails and other animals as pollinators.
Transfer - Wind, insects, water, animals, etc.
Seen in - Insects: Apples, grapes, plums, pears, raspberries, blackberries, strawberries, runner beans, pumpkins, daffodils, tulips, lavender Wind: grasses, catkins, dandelions, maple trees, and goat’s beard.
Number of pollen grains - large number
Type of reproduction - Allogamy
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