CBSE Class 10 Science 2019 · Paper 31/5/1 · Question 20(b)

(a) Diagram of the human female reproductive system (see the figure), labelled: (i) Ovary - produces the egg. (ii) Oviduct (fallopian tube) - fertilisation takes place here. (b) Gonorrhoea and syphilis. (c) Contraceptive devices are the devices and methods used to prevent pregnancy, for example condoms (a mechanical barrier), oral pills (which change the hormonal balance) and the copper-T or loop placed in the uterus. Two reasons for adopting them (any two): to check population growth and keep the family small; to keep a gap between successive births; to maintain the reproductive health of the woman, since frequent pregnancies harm her health. Condoms also check the spread of sexually transmitted diseases.