The Plant, An Illustration of the Organic Life of the Animal
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In our eReader you can find the full English version of the book. Read The Plant, An Illustration of the Organic Life of the Animal 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 The Plant, An Illustration of the Organic Life of the Animal
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In vivipar- ous animals, however, the eggs undergo their early changes in the body of the mother, that is to say, the embryo de- velops in the uterus, and bursts the membrane of the egg, which it leaves there, coming out of the body of the mother naked and already formed ; whereas in oviparous animals, the egg is laid with its membranes and the germ which it contains, and the development of the embryo is extra- uterine.
Production from eggs must therefore be considered as a universal characteri...stic of the animal kingdom. Even animals which propagate by gemmiparous and fissiparous GENERAL CONSIDEEATIONS. 127 reproduction, also lay eggs. Tte former are only additional means employed by nature to secure tlie perpetuation of the species, super-added to tlie usual method of propagation.
Now plants have sexes or sexual organs as well as ani- mals. The female sexual organs in plants are called Fig. 24. Fig. 25.
Fig. 24. A pistil exhibited in section to show tiie young oTnles d, attaclied to the placenta or walls of the ovary a, and contained within its cavity, c.
What to read after The Plant, An Illustration of the Organic Life of the Animal?
You can find similar books in the "Read Also" column, or choose other free books by Coultas, Harland, D. 1877 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
In vivipar- ous animals, however, the eggs undergo their early changes in the body of the mother, that is to say, the embryo de- velops in the uterus, and bursts the membrane of the egg, which it leaves there, coming out of the body of the mother naked and already formed ; whereas in oviparous animals, the egg is laid with its membranes and the germ which it contains, and the development of the embryo is extra- uterine.
Production from eggs must therefore be considered as a universal characteri...stic of the animal kingdom. Even animals which propagate by gemmiparous and fissiparous GENERAL CONSIDEEATIONS. 127 reproduction, also lay eggs. Tte former are only additional means employed by nature to secure tlie perpetuation of the species, super-added to tlie usual method of propagation.
Now plants have sexes or sexual organs as well as ani- mals. The female sexual organs in plants are called Fig. 24. Fig. 25.
Fig. 24. A pistil exhibited in section to show tiie young oTnles d, attaclied to the placenta or walls of the ovary a, and contained within its cavity, c.
What to read after The Plant, An Illustration of the Organic Life of the Animal?
You can find similar books in the "Read Also" column, or choose other free books by Coultas, Harland, D. 1877 to read onlineMoreLess
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