Ans.Sexual Reproduction In Plants
Sexual reproduction involves the production of gametes (sperms and egg cells) and their fusion i.e. fertilization.Gametes are produced in special structures in plant body. The major plants groups are mosses, ferns and seed plants. The seed plants include gymnosperms and angiosperms (flowering plants). Plant groups use different methods for bringing the sperm and egg cells together. In mosses and ferns sperms are motile and can swim to egg cells. Therefore, these plants require water (in the form of dew or rain) for sexual reproduction. On the other hand, gymnosperms and angiosperms have special methods for carrying their sperms to egg cells. They do not need water for reproduction.