It is the most innermost whorl and the female reproductive organ of a flower. It is made up of one or more carpels. Each carpel has three parts – Stigma, Style and Ovary. Stigma It is the topmost part of a carpel. Stigma forms the receptor surface for the pollen grains. Style It is the … Read more

Androecium is the third whorl of a flower. It is composed of stamens of microsporophylls. It is the reproductive organ of a plant. Stamen The stamen consists of two parts. A thin slender stalk called the filament, and a bilobed structure at its tip, known as the anther. Usually, anthers are bilobed (dithecous). In some … Read more

The stalk of a flower is called pedicel. A flower with pedicel is called pedicellate flower. Flowers without pedicel are called sessile. The swollen base of the pedicel is called thalamus or receptacle. Each flower has four whorls – Calyx, Corolla, Androecium and Gynoecium. A complete flower possesses all the four whorls. If the flower … Read more

Flower is the reproductive part of a plant. It is a modified shoot with very short and condensed internodes and a number of floral appendages at each node. These floral appendages are modified leaves. A flower may be trimerous, tetramerous or pentamerous when the floral appendages are in multiple of 3, 4 or 5, respectively. … Read more

Flower is the reproductive part of a plant. It is a modified shoot with very short and condensed internodes and a number of floral appendages at each node. These floral appendages are modified leaves. A flower may be trimerous, tetramerous or pentamerous when the floral appendages are in multiple of 3, 4 or 5, respectively. … Read more

In angiosperms, flowers can occur either singly or in groups. When a single flower is present, it is called a solitary flower. When flowers occur in groups, it is called an inflorescence. The axis of an inflorescence is known as peduncle and the stalk of the flower is called pedicel.   There are two types … Read more

Phyllotaxy The mode of arrangement of leaves on the stem is known as phyllotaxy. There are three types of phyllotaxy in Angiosperms. Alternate phyllotaxy: A single leaf arises from the nodes. (e.g. Hibiscus) Opposite phyllotaxy: Leaves are arranged in pairs at each node. (e.g. Ixora) Whorled phyllotaxy: More than two leaves are arranged at each … Read more

Leaves are lateral appendages borne on stem. They are the photosynthetic organs of a plant. They are green in colour due to the presence of chlorophyll pigment. Each leaf possesses a bud in its axil. This Axilliary bud later develops into branches. Parts of a plant Leaf Base: The point where leaf attaches to the … Read more

Leaves are lateral appendages borne on stem. They are the photosynthetic organs of a plant. They are green in colour due to the presence of chlorophyll pigment. Each leaf possesses a bud in its axil. This Axilliary bud later develops into branches. Parts of a plant Leaf Base: The point where leaf attaches to the … Read more

Stem is the axis of the shoot system of a plant. It bears branches, leaves, flowers and fruits. It is developed from the plumule of a growing embryo. Leaves and buds are borne on stem nodes. Distance between two nodes is known as an internode. Characteristics of Stem Stem shows nodes and internodes. Axilliary buds … Read more