Monday, July 9, 2018

Pollen



This is a photo of a marigold. A marigold is an example of an angiosperm that produces pollen. This marigold contains pollen in the sacs of its anther located in the center of the flower. Pollen is the male gametophyte of a seed plant that is produced from both angiosperms and gymnosperms as a part of sexual reproduction. Gymnosperms produce pollen from the male microsporangiate cones and angiosperms produce pollen in the anthers. In angiosperms, the pollen is developed by receiving nutrition in the anther and then eventually drying out to become dust-like which is the able to be carried by wind or insects. Gymnosperms produce pollen in the male cone by maturing and then releasing its pollen. Pollen grains contain one to a few cells and consists of two layers, the exine and intine. Pollen is dispersed by insects or the wind and through this, the insects or wind pollinate other flowers by spreading the pollen to the stigma of a flower as part of reproduction. 

Adcock, Patrick. “How Is Pollen Produced? | Hunker.” Hunker.com, Hunker, 9 Nov. 2009,  
        www.hunker.com/13428299/how-is-pollen-produced.
“What Is Pollen?” Untitled, pollen.utulsa.edu/whatispollen.html.


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