The flower is said to be a modified shoot because flower has nodes and inter nodes similar to the vegetative shoot. But the inter node are condensed and the number of appendages arising from the nodes are numerous. The flower is generally defined as a highly specialized reproductive shoot, comparable to leaves- bearing shoot. The sepals and petals may be regarded as modified leaves. Stamens and carpels also show some resemblance to leaves in position, arrangement, internal structure and development.