During pregnancy, uterine blood flow in mammals increases to meet the metabolic demands of the growing fetuses.
The table below shows the rate of blood flow per kilogram of uterine tissue for a pregnant and a non-pregnant rabbit (doe):
| Rabbit status | Blood flow per kg of uterus (cm3\text{cm}^3cm3 per minute) |
|---|---|
| pregnant | 15.615.615.6 |
| non-pregnant | 1.21.21.2 |
Calculate the difference in the volume of blood flow per kg of uterus in a 36-hour period. Give your final answer in cm3\text{cm}^3cm3.
Explain two biological advantages to the developing rabbit fetuses of this increased blood flow.
43 exam-style questions on Edexcel IGCSE Biology Reproduction. Each one has a worked solution and a mark scheme showing where the marks go.