受精

• Seed development in most instances commences following fertilization of the ovule .
  大多数种子的形成是从胚珠受精开始的。
• The flower structure in one tree was different, enforcing cleistogamy .
  同一株树上的花结构不同，因而闭花受精是强制实现的。
• They damage female strobili during the interval between pollination and fertilization .
  在传粉与受精的间隔期间，他们毁坏了雌球花。
• Dizygotic twins arise from two separate eggs fertilized by two spermatozoa .
  异卵双生子是由两个精子与两个不同的卵受精而成长起来的。
• The pollen is shed directly on the stigma, resulting in a high percentage of self fertilization .
  花粉直接散落在头上，因而自花受精百分率高。
• Inbreeders are plants which predominantly or wholly produce seeds from self-fertilization .
  近交植物指主要地或完全地通过自在受精产生种子的植物。
• He allowed these "enucleated" eggs to be fertilized by sperm from sea urchins of the genus echinus .
  他让这些“无核”的卵跟海胆属的海胆的精子受精。
• When the male reproductive cell fertilizes the female reproductive cell a zygote is formed .
  当男性生殖细胞与女性生殖细胞发生受精时，就形成了一个合子。
• If an egg is fertilized, the body automatically absorbs it and the extra tissue from the uterus .
  如果卵子未能受精，它和子宫内的其他组织则自动地被身体所吸收。
• Many forest tree species have multiple archegonia which, after fertilization produce a number of proembryos .
  许多林木树种都有颈卵器，受精以后便产生许多原胚。