Question

What type of cohesion of stamens exist in rose? ​

Answer 1

Synandrous : Here all stamens of a flower are united completely to form a single structure. e.g., Family Cucurbitaceae. The fusion of stamens with each other is called cohesion of stamens. Three main types of stamen fusion are identified: filament fusion, anther fusion, and fusion with both filament and anther.

More Information:

Cohesion of stamen: Usually following types of cohesion among stamens occur. They are

• Adelphous : When the filaments of stamens are united and the anthers remain free. It is of three types:

• Monoadelphous: All filaments unite to form a single bundle e.g, Family malvaceae (Hibiscus)

• Diadelphous: Filaments unite to form two bundles. e.g, Family papilionaceae (Pisum, Sesbania, Tephrosia)

• Polyadelphous: Filaments unite to form many bundles. eg, Family rutaceae (Citrus, Melaleuca).

• Syngenesious: When the anther of filament are united and the filaments remain free. eg, Tridax, Sunflower etc

• Synandrous : Here all stamens of a flower are united completely to form a single s eg, Family Cucurbitaceae.

• Gynandrophore: It is an elongated stalk like part between non essential and essential organs of the flower. It is equivalent to androphore, e.g, Passiflora.

• Carpophore: This is a stalk like connection present between two carpels. It is formed due to expansion of the thalamus between the carpels, e.g, Coriandrum and Foeniculum

The union of stamens when takes place among themselves is called as cohesion. The fusion of stamens with each other is called cohesion of stamens. Three main types of stamen fusion are identified filament fusion, anther fusion, and fusion with both filament and antheror stamens inree main types or stamen rusion are interio TIiament fusion, anther fusion, and fusion with both filament and anther

Theoretically, filament fusion can fix the stamens at the relatively stable positions and make the stamens steady to support the moving pollina-tors and protect the ovary Anther fusion can assemble the anthers to the same position and facilitate all the anthers touching the same part of pollinator's body, which can greatly enhance the precision of outcrossing pollination Fusion with both filament and anther can greatly change the morphology of stamens and level of herkogamy besides the effects caused by filament fusion and anther fusion

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Answer 2

Answer:

Answer ♡

• They are dicotyledonous plants. Complete answer: The technical term used for the androecium in a flower of China rose (Hibiscus rosa-sinensis) is monadelphous. Monadelphous is the term used to describe the cohesion wherein all the filaments of the anther are united into a single bundle but the anther remains free.