Wednesday, March 18, 2015

Blog Post Assignment #10

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This was our brassica oleracea flower. In this flower contains male and female gametophytes that will allow it to reproduce without having to be dependent on getting the pollen from another plant.
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After peeling the petals off of the flower it revealed a stalk, and the tip of the stalk is very fluffy looking and when you touch them yellow dust comes off. These tips are the anthers. They produce male haploid gametophytes and results a yellow-ish dust called pollen.
(All pictures that were taken from the microscope lens are at 40x)
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At the center of the flower is a long greenish rod that is higher than most of the stalky filaments that surround it. This green rod is called the stigma, a female reproductive part of the flower which produces female gametophytes.
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When you cut open the stigma of the flower you will find the ovaries of the plant. The ovaries contain eggs to create an offspring.

The brassica oleracea plant is very special because it has both the male and female reproductive organs. By having both of the genders in one flower it is able to pollinate itself, and it does not have to rely on other pollinators in nature. Pollen is produced through the anthers and it is collected on the tip of the stigma. The stigma’s tip is sticky so the pollen can be easily collected. Then the pollen goes to the ovaries and fertilizes an egg.

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