What is a flower? Describe the parts of a typical angiosperm flower.
Explanation Flowers carry out sexual reproduction in flowering plants (angiosperm). A flower has 4 parts- Calyx: it is the outermost whorl, which contains the sepals. They are green leaf-like structures at bud stage. When sepals are free, they are called polysepalous and when sepals are united then they are called gamosepalous. Corolla: it is the layer that is found inside the calyx. It contains petals which help in attracting insects during pollination. When petals are free they are called polypetalous and when petals are united then they are called gamopetalous. Androecium: it is the male reproductive part of a flower. It is called stamen which consist of two parts of filament and bilobed anther. Gynoecium: it is the female reproductive part of a flower. It consists of a stigma which then leads to a long tube style that connects to ovary. Final Answer Flower is a reproductive part of flowering plant .It has 4 parts-calyx, corolla, androecium and gynoecium.