Pollen
['pɒlən] or ['pɑlən]
解释:
(noun.) the fine spores that contain male gametes and that are borne by an anther in a flowering plant.
埃德温娜手打--From WordNet
解释:
(n.) Fine bran or flour.
(n.) The fecundating dustlike cells of the anthers of flowers. See Flower, and Illust. of Filament.
整理:李奥娜
解释:
n. the fertilising powder contained in the anthers of flowers: the male or fecundating element in flowers.—v.t. to cover with pollen.—adj. Pollenā′rious consisting of pollen.—v.t. Poll′enise to supply with pollen.—n. Poll′en-tube the tube by which the fecundating element is conveyed to the ovule.—adj. Poll′inar covered with a fine dust like pollen.—v.t. Poll′inate to convey pollen to the stigma of.—n. Pollinā′tion the transferring or supplying of pollen to the stigma of a flower esp. by aid of insects or other external agents.—adj. Pollinif′erous bearing pollen.—n. Pollin′ium an agglutinated mass of pollen grains.—adjs. Polliniv′orous feeding upon pollen; Poll′inose covered with a powdery substance like pollen.
编辑:拉维恩
例句:
- At seven he painted the Battle of Waterloo with tiger-lily pollen and black-currant juice, in the absence of water-colours. 托马斯·哈代. 还乡.
- Many exotic plants have pollen utterly worthless, in the same condition as in the most sterile hybrids. 查尔斯·达尔文. 物种起源.
- Nearly all our orchidaceous plants absolutely require the visits of insects to remove their pollen-masses and thus to fertilise them. 查尔斯·达尔文. 物种起源.
- As the wind had set for several days from the female to the male tree, the pollen could not thus have been carried. 查尔斯·达尔文. 物种起源.
- Now, it is scarcely possible for insects to fly from flower to flower, and not to carry pollen from one to the other, to the great good of the plant. 查尔斯·达尔文. 物种起源.
- In other orchids the threads cohere at one end of the pollen-masses; and this forms the first or nascent trace of a caudicle. 查尔斯·达尔文. 物种起源.
- When an insect visits a flower of this kind, it rubs off some of the viscid matter, and thus at the same time drags away some of the pollen-grains. 查尔斯·达尔文. 物种起源.
- Thus, in plants, the office of the pistil is to allow the pollen-tubes to reach the ovules within the ovarium. 查尔斯·达尔文. 物种起源.
- The petals in the imperfect flowers almost always consist of mere rudiments, and the pollen-grains are reduced in diameter. 查尔斯·达尔文. 物种起源.
- Insects in seeking the nectar would get dusted with pollen, and would often transport it from one flower to another. 查尔斯·达尔文. 物种起源.
- As beekeeping developed as an industry, the close relationship to fruit growing and horticulture became apparent, as bees were discovered to be the greatest pollen carrying agents known. 佚名. 神奇的知识之书.
- It has lately been shown that bees, instead of searching for pollen, will gladly use a very different substance, namely, oatmeal. 查尔斯·达尔文. 物种起源.
- When the bees gather pollen and make wax and build cells, each step prepares the way for the next. 约翰·杜威. 民主与教育.
- And I will throw in Robert Brown's new thing--'Microscopic Observations on the Pollen of Plants'--if you don't happen to have it already. 乔治·艾略特. 米德尔马契.
录入:门罗