Pollination is brought about by 3 agencies:. Entomophily -pollination by insects, e. Salvia, Helianthus vern. List three agents of pollination and give examples of plant pollinated by the agent? Krishan T. Mar 7, Stigmas are large, feathery and sticky, so that pollen grains carried by wind may attach very easily. The stigma is feathery or sticky. Pollen grains stick to it easily. Characteristics of zoophilous flowers a Flowers are usually large.
Characteristics of hydrophilous flowers: Flowers are usually unscented. They grow underwater. Female flowers are solitary and with a long stalk. Male flowers are light, transferred by water through floating.
Types of Pollination All flowering plants rely on pollination for reproduction. Share This Post. Flowers in which pollination occur through insects are known as entomophilous flowers. Mustard, Basils, Orchids, Roses, Cucurbita, etc. Pollination through wind: In many plants Pollination occurs through wind. Flowers in which pollination occur, through wind are known as Anemophilous flowers.
Paddy, Wheat, Maize. Sugarcane, Palm etc, are Anemophilous or wind pollinated flower. Flowers are usually unattractive and have inconspicuous colour b.
Flowers usually are without sweet scent and nectar. Pollen grains are very light and are produced in large numbers.
It undergoes several mitotic divisions, forming an embryo or the young plant inside the seed. The embryo differentiates to form one or two cotyledons, a hypocotyl, and an epicotyl.
The 3N nucleus formed by the union of one sperm nucleus and the two polar nuclei also undergoes several mitoses, forming the embryo. The endosperm supplies the developing embryo with food. As the fruit ripens and the seed matures, the other parts of the flower dry up. Most cultivated bananas have triploid chromosome number 3N. Because of this uneven number of chromosome sets, they can not divide by meiosis to produce eggs and sperms.
As a result, fruits develop without fertilization. Hence, the fruits produce no seeds. You're very welcome Ms. I love sharing things about science! I love science even before taking engineering in college. Thank you for taking some time reading my article.
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