What is the structure of anther?
What is the structure of anther?
The anther is a structure found in the male reproductory part of the flower refers to as “Stamen” or “Androecium”. It has a knob-like structure, which usually consists of two lobes joined together by the connective tissue. It carry the pollen grains within the microsporangia, which further develops into a pollen sac.
What is the development of anther?
The four cell layers, namely epidermis, endothecium, middle layer and tapetum, develop during this period, giving the anther its distinctive shape with its four individual locules. By stage 6, the central callose stage, the microspore mother cells develop from the sporogenous tissue.
Is anther a Microsporangium?
angiosperms. …in terminal saclike structures (microsporangia) called anthers. The number of stamens comprised by the androecium is sometimes the same as the number of petals, but often the stamens are more numerous or fewer in number than the petals.
What is Microsporogenesis Slideshare?
Microsporogenesis involves the formation of pollen grains in the microsporangia of anthers. • A developing young anther consists of a homogeneous mass of mer istematic cells surrounded by an epidermal layer. • Further growth of the anther makes it four-lobed.
What is the structure and function of anther?
The anther is a key structure in the reproduction of flowering plants. It sits atop the filament of the male structure known as the stamen. It produces the male sex cells, stores them, and provides a place for them to stay until the time is right for them to be dispersed.
What are the two types of anther?
(1) Dithecous : These have two lobes with four microsporangia or pollen sacs. (2) Monothecous : They have only one lobe with two microsporangia or pollen sacs.
What are the four layers of anther?
The anther wall contains four layers called the epidermis, endothecium, middle layer, and tapetum.
How many types of anther are there?
Standard anther attachment types are basifixed, anther attached at its base to apex of the filament; dorsifixed, anther attached dorsally and medially to the apex of the filament; and subbasifixed, anther attached near its base to the apex of the filament.
What is the other name of anther?
Stamen
Stamen refers to a flower’s centrally-located, pollen-producing male organ. The male parts, called stamens, look like long stalks (known as filaments) with a little round shape at their end (called the anther), which contains the plant pollen.
What is tapetum function?
Tapetum is the innermost layer of the microsporangium. It provides nourishment to the developing pollen grains. During microsporogenesis, the cells of tapetum produce various enzymes, hormones, amino acids, and other nutritious material required for the development of pollen grains.
What is the main function of the anther?
What is the structure of the anther?
Structure of Anther Dr. T. A. Gitte, Head, Department of Botany In a flower, stamen is considered as the male reproductive organ. A dithecous anther consists of four locules or four sporangia. The archesporial cells divide periclinally giving rise to primary parietal cells on the outer side and sporogenous cells towards inner side.
What is the function of the anther in a flower?
The anther is a part of the flower’s male reproductive system or stamen. It carries the reproductive structures or the male gametes (pollen grains), which germinate and cause fertilization of an ovule.
How many lobes does the anther have?
The dynamics of anther development and differentiation depend on the co-operative interactions between cell populations. The anther normally consists of two lobes, each with two elongated microsporangia or pollen sacs. The anther lobes are fused together by the connective tissue (Fig 1.1).
What is the difference between anther and a filament?
A filament appears as a long, slender and stalk-like structure found in the stamen. Anther has a bilobed structure that carry pollen grains in the pollen sacs.