Sexual Reproduction in Flowering Plants — Chapter Summary

A flower is a compressed shoot

A flower is a compressed shoot with sepals, petals, stamens, and carpels. Stamens are the male reproductive organs, and carpels form the female reprod

A typical anther is bilobed

A typical anther is bilobed and dithecous, with four pollen sacs, so it is tetrasporangiate. The wall of each microsporangium has four layers: epiderm

Each microspore mother cell undergoes meiosis

Each microspore mother cell undergoes meiosis to form four haploid microspores. These microspores are initially held together by a callose layer, whic

A pollen grain is the male

A pollen grain is the male gametophyte. It has an outer exine made of sporopollenin and an inner intine. Pollen grains are generally 25 to 50 micromet

The ovule is a megasporangium borne

The ovule is a megasporangium borne on the placenta. It has nucellus, integument or integuments, micropyle, funicle, hilum, and chalaza. The megaspore