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biology
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8
Biology
10th Grade
06/04/2012

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Term
conjugation
Definition
type of sexual process most commonly found among simple organisms ex) bacteria
Term
parthenogenesis
Definition
development of an unfertilized egg into an adult animal without fusion with sperm ex) bees
Term
external fertilization
Definition
gametes fuse outside the body of the female ex) frogs
Term
internal fertilization
Definition
gametes fuse inside the body of the female ex) humans
Term
external development in water
Definition
fertilization and development take place outside of the mother's body in the water ex) fish
Term
external development on land
Definition
fertilization inside the mother's body followed by the development outside of her body
Term
internal development placental
Definition
blood vessels of the embiyos circulatory system are in close contact with the mothers circulatory system. ex) humans and most mammals
Term
internal development nonplacental
Definition
mammals in which no placenta forms during development of the embryo. egg laying or in pouched animals. ex) kangaroo
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