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S2 Bio Species Survival
Glossary FC
29
Biology
Not Applicable
12/01/2015

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Term
reproduction
Definition
makes new organisms to replace those lost in the species
Term
asexual
Definition
reproduction involving one parent, produces genetically identical offspring
Term
yeast
Definition
a type of fungus that reproduces by budding
Term
hydra
Definition
simple animals that reproduce asexually by budding
Term
clone
Definition
a genetically identical organism produced by asexual reproduction
Term
sexual
Definition
reproduction involving two parents & leads to variety in the offspring
Term
sperm
Definition
the male gametes
Term
sperm duct
Definition
the tube that sperm swim along to exit the male’s body
Term
penis
Definition
becomes stiff to allow it to be placed inside the vagina to deposit the sperm
Term
testes
Definition
make sperm releasing millions at one time
Term
egg
Definition
the female gamete
Term
ovary
Definition
makes egg cells
Term
oviduct
Definition
connects the ovary to the uterus and is the site of fertilisation
Term
uterus
Definition
where a foetus develops
Term
vagina
Definition
this is where the sperm are deposited by the penis, also called the birth canal
Term
fertilisation
Definition
the fusion of the sperm and the egg
Term
zygote
Definition
the fertilised egg
Term
amniotic sac
Definition
fluid filled bag that acts like a shock absorber to protects the foetus
Term
amniotic fluid
Definition
the liquid in the amniotic sac
Term
placenta
Definition
the organ that allows the mothers blood and foetus’ blood to come close enough to exchange materials
Term
umbilical cord
Definition
a collection of blood vessels that connects the foetus to the placenta
Term
Thalidomide, alcohol & smoking
Definition
three things that can harm the foetus
Term
internal fertilisation
Definition
when the sperm and egg meet inside the female’s body
Term
external fertilisation
Definition
when the sperm and egg meet outside the female’s body
Term
innate
Definition
behaviour that is in-born
Term
learned
Definition
behaviour that is developed through teaching, observation or experience
Term
migration
Definition
a long journey which allows animals to move to favourable living conditions
Term
waggle dance
Definition
allows bees to communicate information about food sources
Term
habituation
Definition
allows animals to avoid wasting energy responding to harmless stimuli
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