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(i) Where are testes located in the human males and why ? State two function of the testes. (ii) In the human female, one of the ovaries releases an egg every month. State the changes that take place if (1) the egg is fertilized, and (2) the egg is not fertilized. (iii) What is done during the surgical method in males and females to prevent pregnancy ?
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State the changes that take place in the uterus when (i) Implantation of embryo has occurred. (ii) Female gamete is not fertilized.
Rina's period occurs every 28 days. Her last period was on the 5th of March. On which day is she most likely to get her next period?
Explain why the menstrual cycle stops during pregnancy.
A student claims, "In humans, ovulation always happens on day 14 of the menstrual cycle". Critically examine this claim and state whether the claim is correct or not. Give at least two reasons for your answer.
