Search results
Results from the WOW.Com Content Network
Pollination is the transfer of pollen from an anther of a plant to the stigma of a plant, later enabling fertilisation and the production of seeds. [1] Pollinating agents can be animals such as insects, for example beetles or butterflies; birds, and bats; water; wind; and even plants themselves.
Pollen itself is not the male gamete. [4] It is a gametophyte, something that could be considered an entire organism, which then produces the male gamete.Each pollen grain contains vegetative (non-reproductive) cells (only a single cell in most flowering plants but several in other seed plants) and a generative (reproductive) cell.
Cross pollination produces seeds with a different genetic makeup from the parent plants; such seeds may be created deliberately as part of a selective breeding program for fruit trees with desired attributes. Trees that are cross-pollinated or pollinated via an insect pollinator produce more fruit than trees with flowers that just self ...
Bee pollinating a sunflower. Pollen is transferred from anther of one plant to stigma of another as bee collects nectar. Pollen tubes are unique to seed plants and their structures have evolved over their history since the Carboniferous period. Pollen tube formation is complex and the mechanism is not fully understood.
Other species do decay rapidly after ripening, and offer the visiting insects large masses of food, as well as pollen and sometimes seed to carry off when they leave. Hoverflies are important pollinators of flowering plants worldwide. [15] Often hoverflies are considered to be the second most important pollinators after wild bees. [15]
The male flowers are removed so that all seeds are hybrids sired from the second variety. "Open pollination" and "open pollinated" refer to a variety of concepts in the context of the sexual reproduction of plants. Generally speaking, the term refers to plants pollinated naturally by birds, insects, wind, or human hands. [1]
Birds play an essential role in the ecosystem as pollinators drink nectar from flower to flower and move pollen, spreading seeds, which helps new plants germinate and grow and reduce unwanted ...
Some plants are pollinated by wind or water, but the majority are pollinated by animals called pollinators. [7] By producing nectar to attract pollinators, plants encourage to move from flower to flower, carrying pollen with them and resulting in pollination. [6] Close to 90% of all flowering plants are pollinated by animals. [8]