Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1890 - Всего страниц: 351 |
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Стр. 25
... cotyledons move vertically upward at night , while at the same time the leaflets move vertically downward ; and that in the same genus the leaves or cotyledons of some species move upward , while those of other species move downward ...
... cotyledons move vertically upward at night , while at the same time the leaflets move vertically downward ; and that in the same genus the leaves or cotyledons of some species move upward , while those of other species move downward ...
Стр. 28
... cotyledons of Phalaris became curved toward a distant lamp , which emitted so little light that a pen- cil held vertically close to the plants did not cast any shadow which the eye could perceive on a white card . These cotyledons ...
... cotyledons of Phalaris became curved toward a distant lamp , which emitted so little light that a pen- cil held vertically close to the plants did not cast any shadow which the eye could perceive on a white card . These cotyledons ...
Стр. 29
... cotyledons which had been exposed to the sun immediately began to close , while the others opened ; so that the cotyledons in the two pots moved in exactly opposite directions while exposed to the same degree of light . We found that if ...
... cotyledons which had been exposed to the sun immediately began to close , while the others opened ; so that the cotyledons in the two pots moved in exactly opposite directions while exposed to the same degree of light . We found that if ...
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Часто встречающиеся слова и выражения
acid acquired action adapted admit allied animals apes appear become believe birds body breeds cause character climate closely compared cotyledons crossed degree descended developed distinct species disuse domestic doubt early effects eggs embryo existence extinct eyes fact female fertilization forms gemmules genera genus geotropism Glacial habits hairs hermaphrodites highly horses increase individuals inhabitants inherited insects instance instincts islands kinds labellum lancelet larvæ leaves less living lower animals Malaxis paludosa males mammals manner mental millimetre modified monkeys movements muscles natural selection naturalists observed occasionally offspring organs Origin of Species ovules papillæ parent peculiar period pigeon plants points pollen pollinium possess present prey probably produced progenitors Quadrumana quadrupeds races radicles remarkable resemble rudimentary savages seedlings seeds seems sexes sexual elements sexual selection slight structure suppose surface tend tendency tion transmitted utricle variability variations varieties various vertebræ whole wild worms young