Concise Selina Solutions for Class 8 Biology Chapter 3 Reproduction on Humans


Sexual reproduction is a mode of reproduction where two parents are involved in producing a new individual. Offspring is produced by the fusion of gametes (sex cells) from each parent. Hence, the newly formed individual will be different from parents, both genetically and physically. Human reproduction naturally takes place as internal fertilization by sexual intercourse. This process is also known as "coitus", "mating", "having sex", or, euphemistically, "making love". The sperm and the ovum are known as gametes (each containing half the genetic information of the parent, created through meiosis). Human reproduction is when an egg cell from a woman and a sperm cell from a man unite and develop to form a baby. Ovulation is when a woman's ovary releases an egg cell. A fertilized egg is implanted in the uterus and grows into the unborn baby.