Class X Chapter 8 – How do Organisms Reproduce Science
nutrients from the mother ’ s blood via the placenta . The waste materials produced by the embryo are also removed through the placenta . Question 5 : If a woman is using a copper−T , will it help in protecting her from sexually transmitted diseases ? Answer : No . Using a copper-T will not provide a protection from sexually transmitted diseases , as it does not prevent the entry of semen . It only prevents the implantation of the embryo in the uterus .
Page 5 of 9