Reproduction Flashcards
What is fertilisation?
The process of the egg being fertilised
The gestation period for humans is…
9 months
Usually only one young is….
Produced
Whar is external reproduction?
An organisms young is produced outside the body
What is internal reproduction?
An organisms young is produced inside the body
What is the gestation period?
How long organisms are pregnant before birth
what is adulthood?
A fully grown organism
In humans reproduction is internal and requires a male or female. This is called…
Sexual reproduction
In asexual reproduction…
only one parent is required to give birth. The parent cell splits itself in two and makes its young.
The cycle starts with the menstrual period, which lasts around…
5 days
What happens during the menstrual period?
The loss of the lining of the uterus, which is lost together with blood from the vagina
Between around day 5 and day 14, one egg reaches…
Full maturity
What is Ovulation? When does it occur?
Ovulation is the release of the egg from the ovary. It occurs on day 14 of the cycle.
After ovulation the uterus wall becomes?
More spongy and filled with blood ready for the egg if it becomes fertilised.
What happens after Ovulation? How long does this take?
The egg travels down the oviduct to the uterus. This takes three days.
