Science chapter 20
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18 terms
Terms | Definitions |
|---|---|
 albumen | The white of an egg |
| egg | A zygote surrounded by a protective shell |
| external fertilization | The uniting of a sperm and ovum out side the parent organisms' bodies |
| fertilization | The formation of a zygote from the union of two gametes |
| gestation | The period of pregnancy |
| incubation | The maintaining of the conditions necessary to hatch an egg |
| internal fertilization | The union of a sperm and ovum within the female parents body |
| ovary | The female reproductive organ that produces eggs |
| pregnant | Carrying a developing embryo in the womb |
| sperm | A gamete formed by a male |
| testis | The male reproductive organ that produce the sperm |
| uterus | A special structure in which the zygote develops in a mother animal or human that gives live birth |
| yolk | Food material stored in an egg to nourish the embryo |
| umbilical cord | A rope like structure that attaches the embryo to the placenta |
| amnion | A fluid filled sack around the embryo |
| amniotic fluid | The fluid inside the amnion protecting the embryo |
| embryo | The unborn animal |
| shell gland | A gland that secretes substances that form the shell of an egg |
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