reproduction Flashcards
flower reproduction (order)
pollination
fertilisation
dispersal
germination
petal
brightly coloured to attract pollinators
stamen
the male sex organ
anther
part of the male sex organ - makes pollen
filament
a thin stalk that supports the anther
ovary
the female sex organs
stigma
collects pollen
style
connects stigma to the ovary
ovule/ova
found inside the ovary, contains the egg cell
what is internal fertilisation and what are it’s pros and cons
it is when an offspring is made and developed inside the female. it is good as it protects the baby but lowers the chances of multiple babies being born at that time
what is external fertilisation and what are it’s pros and cons
it is when offspring are born outside the female. With external fertilisation, there is increased genetic variations but it decreases the chance of the egg/eggs surviving
penis
deposits sperm into the vagina
urethra
the tube carrying the semen out of the penis
testes
produce sperm and testosterone
scrotum
holds the testes outside of the body
sperm duct
carries sperm towards the gland
gland
mixes sperm with a fluid to produce semen
vagina
receives the sperm
uterus lining
builds up each month ready for egg implantation
cervix
holds the baby in place during pregnancy
oviduct
site of fertilisation
plant reproduction in order=
pollen is transported by wind or insects
the pollen grain lands on stigma
a pollen tube grows down the style to ovary
pollen nucleus travels down pollen tube
nucleus fertilises ova
fertilised ova becomes seed
rest of ovary becomes fruit
seed is then dispersed
what is IVF
this is when the sperm and egg cell fertilise in a test tube
what does the placenta do in pregnancy
it carries nutrients and oxygen to the baby and co2 and waste products from baby to the mother
