Field Lore for Young Farmers; a Text-Book for the Graded Schools
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In our eReader you can find the full English version of the book. Read Field Lore for Young Farmers; a Text-Book for the Graded Schools Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Field Lore for Young Farmers; a Text-Book for the Graded Schools
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In some flowers the anthers open and the pollen is all scattered before the stigma is ready to receive it.
In others the stigma gets ready long before the pollen is ripe, and by the time the anthers open it is all dried up and the style tube is dead. Often the style is so long, and the stamens are so short, that the stigma is far out of reach of the pollen, while at other times the style may be short enough, but the flower may droop so as to scat- THE LIFE WORK OF THE PLANT 121 ter the pollen a...way from the stigma instead of toward it.
Nature's Purpose. — But Nature never makes any mis- takes. All these things are for a purpose. In a great many cases if an ovule is fertilized by pollen from its own flower it is not so likely to make a good, strong seed as though the pollen came from another flower, or from a blossom on an entirely different plant of the same kind. That is why Nature takes so many precau- tions against self-fertilization.
Messengers that Carry the Pollen. — But there is an- other difficulty.
What to read after Field Lore for Young Farmers; a Text-Book for the Graded Schools?
You can find similar books in the "Read Also" column, or choose other free books by Grimes, Katharine Atherton to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
In some flowers the anthers open and the pollen is all scattered before the stigma is ready to receive it.
In others the stigma gets ready long before the pollen is ripe, and by the time the anthers open it is all dried up and the style tube is dead. Often the style is so long, and the stamens are so short, that the stigma is far out of reach of the pollen, while at other times the style may be short enough, but the flower may droop so as to scat- THE LIFE WORK OF THE PLANT 121 ter the pollen a...way from the stigma instead of toward it.
Nature's Purpose. — But Nature never makes any mis- takes. All these things are for a purpose. In a great many cases if an ovule is fertilized by pollen from its own flower it is not so likely to make a good, strong seed as though the pollen came from another flower, or from a blossom on an entirely different plant of the same kind. That is why Nature takes so many precau- tions against self-fertilization.
Messengers that Carry the Pollen. — But there is an- other difficulty.
What to read after Field Lore for Young Farmers; a Text-Book for the Graded Schools?
You can find similar books in the "Read Also" column, or choose other free books by Grimes, Katharine Atherton to read onlineMoreLess
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