| 单词 | anemophilous |
| 例句 | These plants are called anemophilous—that is, wind-loving, as though grateful to the wind for carrying their p. 6pollen without payment. Springtime and Other Essays The genus Plantago, like Thalictrum minus, Poterium, and others, well illustrate the change from an entomophilous to the anemophilous state. Darwinism (1889) Dissemination is effected by the agency of water, of air, of animals—and fruits and seeds are therefore grouped in respect of this as hydrophilous, anemophilous and zooidiophilous. Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 Both these authors remark that plants must have been anemophilous before they were entomophilous. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Delpino states that this plant presents in Italy three forms, which graduate from an anemophilous into an entomophilous condition. The Different Forms of Flowers on Plants of the Same Species It has acquired some anemophilous characters—e.g., increased stigmatic surface and exserted anthers. Springtime and Other Essays I have lately had occasion to look over again your discussion on anemophilous plants, and I have again felt much admiration at your work. More Letters of Charles Darwin — Volume 2 The amount of pollen produced by anemophilous plants, and the distance to which it is often transported by the wind, are both surprisingly great. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Therefore the earliest terrestrial plants known to us, namely, the Coniferae and Cycadiae, no doubt were anemophilous, like the existing species of these same groups. Effects of Cross and Self Fertilisation in the Vegetable Kingdom All the species hitherto mentioned which produce cleistogamic flowers are entomophilous; but four genera, Juncus, Hordeum, Cryptostachys, and Leersia are anemophilous. The Different Forms of Flowers on Plants of the Same Species Considering these facts, it is not so surprising as it at first appears that all, or nearly all, the stigmas of anemophilous plants should receive pollen brought to them by mere chance by the wind. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Although the number of anemophilous species is small, as the author just quoted remarks, the number of individuals is large in comparison with that of entomophilous species. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Such cases are, however, intelligible, as almost all plants require to be occasionally intercrossed; and if any entomiphilous species ceased to be visited by insects, it would probably perish unless it were rendered anemophilous. Effects of Cross and Self Fertilisation in the Vegetable Kingdom A vestige of this early state of things is likewise shown by some other groups of plants which are anemophilous, as these on the whole stand lower in the scale than entomophilous species. Effects of Cross and Self Fertilisation in the Vegetable Kingdom In the class Monoecia of Linnaeus, Delpino shows that the species of twenty-eight genera are anemophilous, and of seventeen genera entomophilous. Effects of Cross and Self Fertilisation in the Vegetable Kingdom In the above two classes taken together there are thirty-eight anemophilous and thirty-six entomophilous genera; whereas in the great mass of hermaphrodite plants the proportion of anemophilous to entomophilous genera is extremely small. Effects of Cross and Self Fertilisation in the Vegetable Kingdom We have also seen that as plants became more highly developed and affixed to the ground, they would be compelled to be anemophilous in order to intercross. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Juglans regia. anemophilous plants. fertilisation of Plantago. excretion of nectar. secretion of nectar to defend the plant. anemophilous and entomophilous plants. dioecious plants. Effects of Cross and Self Fertilisation in the Vegetable Kingdom There is no great difficulty in understanding how an anemophilous plant might have been rendered entomophilous. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Lamium album. on anemophilous plants. fertilisation of Plantago. secretion of nectar. instinct of bees sucking nectar. bees frequenting flowers of the same species. cause of it. powers of vision and discrimination of bees. Effects of Cross and Self Fertilisation in the Vegetable Kingdom It is also anemophilous, or is fertilised by the wind; and of such plants only the common beet had been tried. Effects of Cross and Self Fertilisation in the Vegetable Kingdom |
| 随便看 |
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。