* Flower is a modified shoot (stem bearing leaves). * In a typical flower the stem portion is condensed to form a compact receptacle called thalamus. The thalamus bears whorls of green leaves/appendages (sepals), colored leaves (petals), male appendages stamens, female appendages (ovaries).

Is flower modified leaf?

The flower is composed of four whorls of modified leaves, the calyx, corolla, androecium, and gynoecium. … In addition, each flower possesses an ovary (at the base of the pistil) formed from modified leaves called carpels (note that the pistil itself is sometimes referred to as the carpel).

Are flowers modified?

Most flowers are modified, to a greater or lesser extent, from the basic pattern. The fact that all flowers share the same basic floral plan is good evidence for evolution. If flowering plants didn’t share a common ancestry, then there is no reason to expect that flowers would have the same plan.