Asslam Alikum everyone!
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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 plant 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.
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In the life cycle of plants,two different generations alternate with each other.one generation in diploid and produce spores.it is called sporophyte generation. The generation .
The phenomenon in which two different generations alternate with each other during life cycle is known as alternation of generations.
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In most plants, sporophyte generation is dominant.it means that it is big in size and is independent. Sporophyte generation is dominant.it means that it is big in size and is independent.sporophyte produce haploid spores by meiosis.The spores develop into gametophyte.it is small in size and depends upon sporophyte.it produce gametes by mitosis.
The male and female gametes fuse and form diploid zygote.The zygote undergoes repeated mitosis and develops into few a new diploid sporophyte
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