Comments on: pollen grain?? http://www.about-allergies.net/health/pollen-grain Prevent Allergy Suffering Sat, 04 Feb 2012 12:08:41 +0000 http://wordpress.org/?v=2.3.3 By: Islam http://www.about-allergies.net/health/pollen-grain#comment-284 Islam Mon, 23 Apr 2007 03:11:20 +0000 http://www.about-allergies.net/health/pollen-grain#comment-284 The pollen grain is the structure used to transport the male gamete (i.e. male DNA) to the female part of a flower. Pollen must be strong to protect the male gametes on their journey. The outer wall of the pollen grain, called the exine, is composed of a very unusual substance called sporopollenin which is very tough. The inner layer is made of cellulose and is similar in construction to an ordinary plant cell wall. Pollen grains are microscopic - usually about 15 to 100 microns - and just a pinch of pollen powder contains thousands and thousands of grains. i have some photo but i dont know how to send it The pollen grain is the structure used to transport the male gamete (i.e. male DNA) to the female part of a flower. Pollen must be strong to protect the male gametes on their journey. The outer wall of the pollen grain, called the exine, is composed of a very unusual substance called sporopollenin which is very tough. The inner layer is made of cellulose and is similar in construction to an ordinary plant cell wall. Pollen grains are microscopic - usually about 15 to 100 microns - and just a pinch of pollen powder contains thousands and thousands of grains.
i have some photo but i dont know how to send it

]]> By: Maverick http://www.about-allergies.net/health/pollen-grain#comment-283 Maverick Sun, 22 Apr 2007 01:28:53 +0000 http://www.about-allergies.net/health/pollen-grain#comment-283 Kindly click on the links below . You will see a number of thumbnail pictures . Click on them one by one to enlarge = +&btnG=Search+Images&gbv=2 Kindly click on the links below . You will see a number of thumbnail pictures . Click on them one by one to enlarge =

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