Biology (species survival) Flashcards
(27 cards)
Reproduction
makes new organisms to replace those lost in the species
Asexual
reproduction involving one parent, produces genetically identical offspring
Yeast
a type of fungus that reproduces by budding
Clone
a genetically identical organism produced by asexual reproduction
three things that can harm the foetus
thalidomide, alcohol, smoking
simple animals that reproduce asexually by budding
Hydra
reproduction involving two parents & leads to variety in the offspring
Sexual reproduction
The male gametes
Sperm
the tube that sperm swim along to exit the male’s body
Sperm duct
becomes stiff to allow it to be placed inside the vagina to deposit the sperm
Penis
Testes
Make sperm
The female gamete
Egg
Ovary
makes egg cells
Oviduct
connects the ovary to the uterus and is the site of fertilisation
Uterus
where a foetus develops
Vagina
is where the sperm are deposited by the penis, also called the birth canal
Fertilisation
the fusion of the sperm and the egg
Zygote
the fertilised egg
fluid filled bag that acts like a shock absorber to protects the foetus
amniotic sac
the organ that allows the mothers blood and foetus’ blood to come close enough to exchange materials
Placenta
Internal fertilisation
when the sperm and egg meet inside the female’s body
External fertilisation
when the sperm and egg meet outside the female’s body
Innate
behaviour that is in-born
Learned
behaviour that is developed through teaching, observation or experience
