what is self pollination?what's the difference between self pollination and cross pollination?
Answers
Answered by
30
SELF POLLINATION:- When the pollen grains from the anther of a flower are transferred to the stigma of the same flower (or another flower in a same plant), it is called self pollination.
Difference between self and cross pollination
Cross Pollination Self Pollination
Definition
Cross pollination is the transfer of pollen grains from the anther of a flower to the stigma of a flower of a different plant of the same species. Self pollination is the transfer of pollen grains from the anther to the stigma of the same flower
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. Some legumes, e.g. peanuts. Orchids, peas and sunflowers, wheat, barley, oats, rice, tomatoes, potatoes, apricots and peaches.
Transfer
Wind, insects, water, animals, etc. Shed pollen directly onto stigma.
Plant differences
Brightly colored petals, nector and scent, long stamens and pistils. Smaller flowers.
Results
More variety in species. It allows for diversity in the species, as the genetic information of different plants are combined. However, it relies on the existence of pollinators that will travel from plant to plant. More uniform progeny. Allows plant to be less resistant as a whole to disease. However, it does not need to expend energy on attracting pollinators and can spread beyond areas where suitable pollinators can be found.
Number of pollen grains
large number small number
Type of reproduction
Allogamy Autogamy, Geitonogamy
Occurs in...
Either perfect or imperfect flowers Perfect flowers
Difference between self and cross pollination
Cross Pollination Self Pollination
Definition
Cross pollination is the transfer of pollen grains from the anther of a flower to the stigma of a flower of a different plant of the same species. Self pollination is the transfer of pollen grains from the anther to the stigma of the same flower
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. Some legumes, e.g. peanuts. Orchids, peas and sunflowers, wheat, barley, oats, rice, tomatoes, potatoes, apricots and peaches.
Transfer
Wind, insects, water, animals, etc. Shed pollen directly onto stigma.
Plant differences
Brightly colored petals, nector and scent, long stamens and pistils. Smaller flowers.
Results
More variety in species. It allows for diversity in the species, as the genetic information of different plants are combined. However, it relies on the existence of pollinators that will travel from plant to plant. More uniform progeny. Allows plant to be less resistant as a whole to disease. However, it does not need to expend energy on attracting pollinators and can spread beyond areas where suitable pollinators can be found.
Number of pollen grains
large number small number
Type of reproduction
Allogamy Autogamy, Geitonogamy
Occurs in...
Either perfect or imperfect flowers Perfect flowers
Answered by
26
Answer:
Explanation:
self pollination
the pollination of a flower by pollen from the same flower or from another flower on the same plant.
cross pollination
pollination of a flower or plant with pollen from another flower or plant.
Similar questions