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Subjects

Science

Reproduction

प्रजनन

In this Class 10 Science topic from the “World of Living” chapter, students explore how organisms produce new individuals and why reproduction is essential for the continuation of life. They compare asexual and sexual reproduction, study reproductive processes in plants and humans, and understand puberty, the human reproductive system, fertilisation, menstruation, and basic reproductive health. The topic also introduces contraception and the role of responsible choices in preventing unwanted pregnancy and sexually transmitted infections.

Practice questions

Why may sperm capability decrease without secretions of accessory glands?Why will pregnancy be difficult if the fallopian tube is blocked even after normal ovulation?Thickening of the uterine lining is preparation for which possible event?Why will pregnancy not continue even after fertilization if implantation does not occur?Why can the placenta be called a structure for selective exchange?Why does the uterine lining break down during menstruation when fertilization does not occur?What is the correct sequence between ovulation and pregnancy?What mainly connects body changes during adolescence with reproductive ability?How are sperm and egg structurally different according to their functions?Why does a contraceptive pill not protect against sexually transmitted diseases?At which level does a copper intrauterine device act to prevent pregnancy?Which function of testes may continue even after vas deferens is blocked in male sterilization?What is the direct result of blocking the fallopian tube in female sterilization?Why is a condom considered useful in both contraception and disease prevention?What is the biggest benefit of correct information in reproductive health?If the placenta does not work properly, which effect on embryo development is most likely?Why do waste substances move from the embryo toward the mother through the placenta?Why is stored food in a seed necessary at the beginning of germination?Why may germination stop if a seed gets water but no air?How is seed dispersal by fruit useful for both parent plant and offspring?