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- stigma The pollen-receptive surface of a carpel or group of fused carpels, usually sticky. The apical end of the style where deposited pollen enters the pistil.An external tracheal aperture in a terrestrial arthropod.A skin lesion that is a diagnostic sign of some disease.The area of a plant where pollen is deposited for fertilisation.
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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 . Description. Stigma of a Tulipa species, with pollen. Closeup of stigma surrounded by stamens of Lilium 'Stargazer')
Dec 24, 2021 · Stigma is a part of the female reproductive structure of the flower. It comprises the pistil, a part of the gynoecium or female reproductive organ of a plant, together with two other structures, the style, and ovary. Stigma is a specially adapted portion of the pistil modified for pollen reception. Stigma Flower.
Stigma is a light-sensitive organelle found in certain unicellular eukaryotic organisms, such as algae and some protists. It helps the organism navigate toward light sources for photosynthesis.
stigma. 1. The receptive tip of the carpel, which receives pollen at pollination and on which the pollen grain germinates. The stigma is adapted to catch and trap pollen, either by combing pollen off visiting insects or by various hairs, flaps, or sculpturings.
Definition. The stigma is the part of a flower's pistil that receives pollen during fertilization. It is typically sticky or feathery to effectively capture and hold pollen grains.
Definition. The stigma is the part of the pistil in angiosperms that receives pollen during fertilization. It is usually located at the top of the style and has a sticky or feathery surface to capture pollen grains.
