Snapdragon (Antirrhinum majus) seed Science Image

Ref: 80200021



Snapdragon (Antirrhinum majus) seed, coloured scanning electron micrograph (SEM). Small seeds like this one often have very roughly textured seed coats, or testas. The ridges and craters are produced by outgrowths of the integument, or outer skin, of the ovule. Their purpose is to trap small particles of soil, so that when the seed falls to the ground it is anchored and can germinate in security without being blown away. Magnification: x134 when printed 10 centimetres wide.