| 词汇 | viviparous |
| 释义 | viviparous adjective biology specializeduk /vɪˈvɪp.ər.əs/ us /vaɪˈvɪp.ər.əs/ giving birth to young that have already developed inside the mother's body, rather than producing eggs胎生的 Animal reproduction androgen anti-oestrogen asexuality asexually barrenness calve fertile impregnate oestrogen out-reproduce ovulate panmictic panmixia procreate procreation procreative rut semen spawn sterile Examples of viviparousviviparous Thus, the shed propagules are no longer seeds in a strict sense but are instead viviparous seedlings. These parasitic worms are viviparous and multiply relatively fast on susceptible hosts. The alate viviparous female has four or more hairs on the first tarsal segment. Another important morphological character is the number of tarsal segments of apterous viviparous females. Although smaller propagules will still germinate, seedling establishment may be impaired, particularly in viviparous species, such as many mangroves. In these species, the oviductal secretions are supposed to adapt to the viviparous mode. The common viper, serpent, and copperhead, along with viviparous lizards such as the crested newt, all live in the reserve. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The reproductive biology of the onefin electric ray has not been documented; presumably it is viviparous like other electric rays. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Like other requiem sharks, it is viviparous, with the developing embryos mainly nourished through a placental connection formed from the depleted yolk sac. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Unusual among the ground sharks, the false catshark is viviparous with the developing embryos practicing intrauterine oophagy. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Reproduction is presumably aplacental viviparous like in other stingrays, with the developing embryos sustained by maternally produced histotroph (uterine milk). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is characterised by calyces with 8-16 lanceolate, pointed lobes, 16-32 stamens, explosive release of pollen, and viviparous propagules. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is presumably aplacental viviparous like other members of its family. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Reproduction is aplacental viviparous, with the females supplying their unborn young with histotroph (uterine milk). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The females of many viviparous species develop a placenta with which to provide the growing embryo with nutrients. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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