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Bri Davis CH. 26 Vocab Science :)
Chapter 26 vocab Science
22
Science
8th Grade
02/07/2014

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Term
asexual reproduction
Definition
reproduction in which a single parent produces offspring that are genetically identical to the parent
Term
sexual reproduction
Definition
reproduction in which two sex cells join to form a zygote; sexual reproduction produces offspring that share characteristics of both parents
Term
egg
Definition
a sex cell produced by a female
Term
sperm
Definition
a sex cell(s) produced by a male
Term
zygote
Definition
a fertilized egg
Term
external fertilization
Definition
the fertilization of eggs by sperm that occurs outside the body of the female
Term
internal fertilization
Definition
the fertilization of an egg by sperm that occurs inside the body of the female
Term
testes
Definition
the organs in the male reproductive system that make sperm and testosterone
Term
puberty
Definition
the time of life when the sex organs become mature
Term
vas deferens
Definition
a tube in males where sperm is mixed with fluids to make semen
Term
semen
Definition
a mixture of sperm and fluids
Term
penis
Definition
the male reproductive organ that transfers semen into the females body during sexual intercourse
Term
ovaries
Definition
in animals, an organ in the female reproductive system producing eggs. in flowers, the structure containing ovules that will develop into fruit following fertilization
Term
fallopian tube
Definition
the tube that leads from an ovary to the uterus
Term
uterus
Definition
an organ in the female reproductive system where zygote grows and develops
Term
vagina
Definition
the passageway in the female reproductive system that receives sperm during sexual intercourse
Term
infertile
Definition
the state of being unable to have children
Term
embryo
Definition
an organism in the earliest stage of development
Term
implantation
Definition
the process in which the embryo imbeds itself in the lining of the uterus
Term
placenta
Definition
a special organ of exchange that provides a developing fetus with nutrients and oxygen
Term
umbilical cord
Definition
the cord that connects the embryo to the placenta
Term
fetus
Definition
an embryo during the later stages of development within the uterus
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