What is Syngenesious anther?
Syngenesious stamen are those stamens whose anthers are united together into a tube and its filaments are free. In syngenesious plants, the anthers shed their pollen inward and the style pushes them through the anthers like a piston and shoves them upto present it on top of anthers.
What is Syngenesious and Synandrous stamens?
Syngenesious reproductive structure are those stamens whose anthers are united along into a tube and its filaments are free. Synandrous condition is that the fusion of each stamens or gametoecium thereupon of filaments of the flower.
What do you mean by Syngenesious?
: united by the anthers syngenesious stamens : having stamens so united.
What is connective anther?
Most commonly anthers are two-lobed and are attached to the filament either at the base or in the middle area of the anther. The sterile tissue between the lobes is called the connective, an extension of the filament containing conducting strands. It can be seen as an extension on the dorsal side of the anther.
What is Monothecous anther?
A monothecous stamen has only one-lobed anther with two pollen chambers, also called bisporangiate. it is seen in Malvaceae. A dithecous stamen has two lobes of anthers with four pollen chambers, also called tetrasporangiate.
What is Synandrous?
Synandrous meaning (botany) Having stamen fused along both their filaments and anthers. adjective. 2. (botany, rare) Having stamens fused together in any way.
What is the difference between monadelphous and Diadelphous?
is that monadelphous is (botany) having all its stamens within a flower fused together at least partly by the filaments while diadelphous is (botany) having its stamens fused together at least partly by the filaments so that they form two separate bundles, or a bundle and a lone separate stamen.
Are sunflowers Syngenesious?
In Family Asteraceae, anthers are syngenesious (synantherous) in which stamens are fused together at their edges by anthers only, forming a ring around the gynoecium. The filaments are free, e.g., sunflower.
What is Gynandrous condition?
having both male and female reproductive organs, especially as a normal condition of the species, but occasionally as an abnormality: Gynandrous specimens from these butterfly species are not uncommon.
What is flower anther?
The male reproductive part of a flower is called the stamen. It is composed of a long tube, called a filament, and has a pollen-producing structure on the end. This oval-shaped structure is called the anther. It is crucial in the reproduction of flowering plants, as it produces the male gametophyte, known as pollen.
How many anthers does a flower have?
stamen, the male reproductive part of a flower. In all but a few extant angiosperms, the stamen consists of a long slender stalk, the filament, with a two-lobed anther at the tip. The anther consists of four saclike structures (microsporangia) that produce pollen for pollination.
Which is an example of a synandrous flower?
Synandrous: When both the anthers and filaments of all the stamens fuse together, the condition is said to be synandrous, example, Cucurbita (gourd), Cucumis (cucumber) and other plants of cucurbitaceae family. Adhesion is the attachment of members of different whorls of a flower.
Which is the best definition of the word syngenesious?
Definition of syngenesious : united by the anthers syngenesious stamens : having stamens so united
What kind of flower has two stamens?
Diandrous: In this case, the flower consists of two stamens, example, Adhatoda. Triandrous: The androecium is said to be triandrous when it consists three stamens, example, Triticum aestivum (wheat). Tetrandrous: The androecium is said to be when it has four stamens, example, Mimosa.
How are the filaments and anthers of a flower United?
Filaments are united forming a number of bundles but the anthers remain free, e.g. castor, lemon. Filaments are free and the anthers are united together into a tube e.g. sunflower, marigold. Stamens are united throughout their whole length by filaments and anthers e.g. Cucurbitaceae. It is the female reproductive part of the flower.