以下为句子列表:
英文: Double fertilization The fusion of one pollen nucleus with the egg to form the zygote and of the other pollen nucleus with a polar nucleus to form the triploid endosperm nucleus.
中文: 双受精:指花粉粒中的一个精子与胚珠中的卵细胞结合形成受精卵,另一个精核与极核结合形成三倍体的胚乳核。
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英文: Embryogeny (embryony) 1. The development of an EMBRYO from the moment the ZYGOTE divides.
中文: 胚胎发生(胚状体):1.是从受精卵分裂开始的胚胎发展过程。
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英文: In this species, the first division of zygote produces two equal hemispheric cells by the first partition wall at the right angles to the axis of the archegonium.
中文: 合子的第一次分裂面垂直于颈卵器的长轴,产生两个相等的子细胞,靠近颈卵器颈部的营养器官原始细胞和远离颈部的基足原始细胞。
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英文: Karyogamy The fusion of two nuclei that exist within a common cytoplasm, as occurs in the formation of the zygote from two gametes.
中文: 核配:同一个细胞中两个核之间的融合现象称为核配,核配发生在两个配子结合成合子的过程中。
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英文: One fuses with the egg cell to form a zygote while the other either degenerates or, in certain angiosperms, fuses with the polar nuclei to give the primary endosperm nucleus.
中文: 一个与卵细胞结合形成受精卵,另一个要么退化,要么在某些被子植物中与极核结合形成初生胚乳核。
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