NEET Biology-07 Reproduction in Plants and Humans

Why do flowering plants bother with four floral “whorls” before reproduction can even begin? Step by step, you’ll work from the outside of a flower to the inside—sepals, petals, stamens, and carpels—so you can name every part and pin down what actually makes pollen and what produces the egg (without mixing up carpel vs. pistil or ovary vs. ovule). From there, the book follows reproduction as a clear storyline: how a young anther builds pollen through microsporogenesis, why one microspore mother cell gives four pollen grains (and how NEET-style counting works), and what makes a pollen grain tough enough to survive heat, acids, and time—right down to exine, intine, germ pores, and viability. On the female side, you’ll map the ovule (funicle, hilum, integuments, micropyle, chalaza) and trace megasporogenesis into a seven-celled, eight-nucleate embryo sac. Then pollination types (autogamy, geitonogamy, xenogamy), agents (wind, water, animals), and outbreeding devices lead straight into pollen–pistil interaction, double fertilization, and what becomes seed, fruit, pericarp, and seed coat. It doesn’t stop at plants: you’ll also review human reproduction, gametogenesis, the menstrual cycle, fertilization, implantation, placenta, contraception, STIs, and key genetics—from Mendel to linkage, DNA replication, gene expression, and evolution—so exam facts finally connect into one coherent picture.