Flowers come in a wide variety of colors, shapes, and sizes, but they all share the same primary function: reproduction. Each flower contains four main parts: the sepal, petal, stamen, and pistil, each with a specific role.  The sepal is a leaf-like structure that protects the developing flower bud before it opens. Once the flower blooms, its petals, often brightly colored, help attract pollinators such as insects and birds. As these pollinators move from flower to flower, they transfer pollen, aiding in reproduction.  The stamen is the male reproductive organ. It consists of a slender stalk called the filament, which supports the anther. The anther is where pollen grains are produced.  The pistil is the female reproductive organ. At the top is the stigma, a sticky surface that captures pollen. The style, a thin tube, connects the stigma to the ovary at the base of the pistil. Inside the ovary are ovules, which can develop into seeds after fertilization.

Angiosperms, or flowering plants, are divided into two main groups: monocots and dicots, each with distinct characteristics.  Monocots include plants such as grasses, bamboo, and palm trees. They have seeds with one cotyledon, and their leaves typically show parallel veins. Inside the stem, their vascular tissue is arranged in scattered bundles. Monocots also tend to have flower parts in multiples of three and fibrous root systems, which spread out in many directions.

In contrast, dicots make up most flowering plants. Their seeds contain two cotyledons, and their leaves have branched or net-like veins. Their vascular bundles are arranged in a ring pattern within the stem. Dicots usually have flower parts in multiples of four or five and develop a taproot system, which can grow deep and help support taller plants.

Review:

1. What is the function of a flower?
2. Which part of the flower attracts pollinators toward its center?
3. Compare monocots to dicots.