Seed of the snapdragon

Seed of the snapdragon

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Caption: False-colour scanning electron micrograph (SEM) of a seed of the snapdragon, Antirrhinum majus. Small seeds like this one often have very roughly textured seed coats, or testa. The ridges & craters are produced by outgrowths of the integument, or outer skin, of the ovule (egg). Their purpose is to trap small particles of soil, so that when the seed falls to the ground it is anchored & can germinate in security without being blown away. The testa is mechanically protective & limits entry of solutes into the seed. Magnification: x25 at 35mm size. Gold tint. Reference: MICROCOSMOS, figure 4.40, page 86.

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Keywords: antirrhinum majus, botany, nature, part, parts, plant, plants, reproduction, reproductive, seed, snapdragon, structure, type

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