flower

In this page-

- Morphology 

- Flowers 

- Hypogynous flower

Perigynous flower

Epigynous flower Estivation Androecium Gynoecium Placentation

Morphology 

The study of varied external options of the plants is thought as plant morphology. 

The Angiosperms are characterized by presence of roots, stems, leaves, flowers, and fruits. 

These are the most important characteristics of angiosperms. 

Flower 

The flower It is the fruitful unit within the angiosperms . 

It is meant for reproduction. 

A typical flower has four completely different types of whorls organized in turn on the swollen finish of the stalk or pedicle, referred to a as neural structure or receptacle or thalamus . 

These are curl, corolla, androeciun, gynoecium. 

Calyx and corolla are accent organs. 

Androecium and gametoecium and fruitful organs. 

Bisexual -When a flower has each gametoecium and gametoecium. 

Uni sexual- A flower having either solely stamens or solely carpels. 

Based on the position of ovary with reference to different floral half on neural structure flower are of following sorts. 

1. Hypogynous flower

 Ovary occupies the best position. 

The ovary in such case is named superior. 

Example- Mustard, garden egg and china rose. 

2. Perigynous flower 

If the gymnasium is settled at the center and different elements are on the rim at same hight. 

Ovary is named half-inferior. 

3. Epigynous flower 

The margin of neural structure grows into fully cowl the ovary.

Ovary aforementioned to be inferior. 

Estivation

The mode of the arrangement of sepals or petals in floral bud with reference to the opposite members of same whorl is named as estivation. 

Estivation of flower is of 4 sorts. 

Valvate 

Inbricate 

Twisted 

Vexillary 

Androecium

Androecium consists of stamens. 

Each reproductive structure that represents the male sex organ consists of a stalk or a filament associate degreed a reproductive structure. 

Gynoecium

Gynoecium is the feminine fruitful a part of the flower and is formed from one or a lot of pistils. 

A pistil consists of 3 elements particularly stigma, vogue and ovary. 

Placentation

Placentation The arrangement of ovules at intervals the ovary is named placentation. Their square measure 5 forms of placentation. 

1. Marginal placentation 

The ovules develop in rows close to the margin on the placenta fashioned on the ventral structure. 

For example- family Leguminous. 

2. Parietal placentation 

The placenta is created by the swelling from cohering margins and on the latter develop the ovules in rows.

For example- family Papaveraceae 

3. Axial placentation 

Here, the placenta develop from the central axis that correspond to the convergent margins of pistil. 

For example- potato family, malvaceae. 

4. Free central 

The placenta develop within the center of the ovary as a prolongation of the floral axis and therefore, the ovules square measure hooked up on the axis.

For example- Primulaceae. 

5. Basal placentation 

The plalcenta develops directly in the neural structure and bears one ovule at the bottom of the unilocular ovary. 

For example- compositae.