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- The stigma is a swollen, knob-like structure. It can be either hairy or sticky, or sometimes both to trap pollen grains. In wind-pollinated flowers, like grasses, it may be feathery and branched or elongated. However, for some other flowers, it may be compact and has a sticky surface.
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The stigma is fixed to the apex of the style, a narrow upward extension of the ovary. The stigma (pl.: stigmas or stigmata) [1] is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower.
stigma part of a flower. The pollen-receptive surface of a carpel or group of fused carpels, usually sticky; usually a point or small head at the summit of the style where deposited pollen germinates
The characteristics of stigmas are vital for plant reproduction as they directly influence pollination success and genetic diversity. By having varied stigma shapes, sizes, and textures, plants can attract specific pollinators or increase compatibility with particular pollen types.
May 22, 2021 · The stigma is at the top of the style and is a sticky platform where pollen is deposited. The stigma forms the distal portion of the style or stylodia. The stigma is composed of stigmatic papillae, the cells which are receptive to pollen. These may be restricted to the apex of the style or, especially in wind pollinated species, cover a wide ...
Browse 3,542 authentic flower stigma stock photos, high-res images, and pictures, or explore additional flower blooming or stamen stock images to find the right photo at the right size and resolution for your project.
The gynoecium (whether composed of a single carpel or multiple "fused" carpels) is typically made up of an ovary, style, and stigma as in the center of the flower. Image by LadyofHats, Public domain, via Wikimedia Commons.
