A stalk connecting an ovule or a seed with the placenta.

Frequently the basal ovule, which is the last one to be fertilized would abort.

最后受精的基生胚珠经常败育.

The ovule of Hyoscyamus niger is renuinullceate.

天仙子(Hyoscyamusniger)胚珠为薄珠心胚珠.

Male reproductive cells travel down the tube and join with the ovule, fertilizing it.

雄性生殖细胞到达花柱然后加入卵子, 使它授精.

Chalaza ( pl . chalaxae or chalazas ) The region of an angiosperm ovule where the nucellus and integuments merge.

合点 :被子植物胚珠上的一个区域,在合点处珠心和珠被愈合.

Testa The hard dry protective covering of a seed, formed from the integuments of the ovule.

外种皮:覆盖在种子外部的坚硬干燥的保护层, 由胚珠的珠被发育形成.

Ovarian 2 rooms, ovule much line, style filiform, post tongue shape is compressed.

子房2室, 胚珠多列, 花柱丝状, 柱头舌状扁平.

The occurrence of more than one embryo in the ovule denotes polyembryony.

在胚珠中有一个以上的胚发生是表示多胚现象.

The fertilized ovule becomes the seed, and the ovary becomes the fruit.

已受精的卵子成为种子, 而子房变成了果实.

Ovarian half, ovule majority, the seed has a wing.

子房半下位, 胚珠多数, 种子有翅.

The spherical embryonic mass of blastomeres formed before and resulting from cleavage of the fertilized ovum.

桑椹胚形成于''.'囊'.''胚之前且处于胚胎''.'期'. ''内的球形裂球群,由受精卵细胞的分裂而成.

One pc of germ cell approaches to a ovum quietly at first.

一个精子一马当先悄悄接近卵子.

By day 11 the ovum begins to attach and implant in the lining of the uterus.

到第11天卵子着床嵌入子宫内壁.

One way is taking the cell from a fertilized ovum.

一种方法是从受精卵中取出细胞.

Field distribution pattern of the first generation of rice stem fly ovum was preliminarily studied.

对稻秆蝇一代卵在田间的分布型进行了初步研究.

In vitro, the acrosome reaction of sperm does not influence the ovum fertilization rate.

在体外, 精子顶体反应率的高低与卵子受精率没有明显的相关性.

Then you put that ovum into a different female's stomach.

然后,将那个卵细胞放到一个不同的雌性腹中.

The ovum develops only in the female, and the sperm cell develops only in the male.

卵细胞仅在女性体内产生, 而精子细胞则仅在男性体内制造.

Several suitable target antigens from Spermatozoa, ovum and reproductive hormones have been used for the vaccine.

人们从精子 、 卵细胞和生殖激素中筛选出最为适合的靶抗原用于免疫避孕疫苗.

How does a zygote differ from an ovum?

受精卵和卵细胞有何不同?

Once the ovum is released it has a lifespan of 12 to 36 hours.

卵子排出后可存活12至36小时。