The smallest flowering plant is the duckweed which floats on the surface of pond water. It is 0,5mm long. Many plants produce flowers. As the flower develops it opens and the sepals fold back or fall off, showing the petals. Some plants have colourful and sweet-smelling flowers, while others have flowers which are small, have no scent and are not easy to see.
Flowers are the reproductive structures of plants.
Most flowers are hermaphrodite, this means that they have both male and female parts. The male parts are called stamens and it is in the anthers of the stamens that the pollen is made. The main problem for the plant is how to get the pollen, which contains the male sex cell, to the carpel of another flower. The brightly coloured flowers use certain types of animals to transfer their pollen. Some flowers depend on the wind to take the pollen from one flower to another flower.