How are sepals different from petals ?
A sepal is a part of the flower of angiosperms or flower plants. Sepals in a “typical” flower are green and lie under the more conspicuous petals. As a collective unit the sepals are called the calyx of a flower. The perianth is made up of the calyx, which is the outer part of the flower made up of sepals and the inner part of the perianth (called the corolla) which is made up of petals. The petals and sepals are usually differentiated into colorful petals and green sepals. But many flowers have colorful sepals and lack petals or the sepals and petals look similar and are often called tepals. The term tepal is usually applied when the petals and sepals are not differentiated and look similar or the petals are absent and the sepals are colorful. When the flower is in bud, the sepals enclose and protect the more delicate floral parts within. Morphologically they are modified leaves. see photo click the link– htt
