The easiest way is a cut test. Take random samples of ~10 fruits/seeds and cut them in half to see if solid. Many maples, ...

Seed structure with a large central cell in the center (cell nucleus in yellow) surrounded by the tissue of the mother plant (purple). The mature central cell (left) is in a quiescent state until ...

Drawing inspiration from the seed structure of the South African geranium (Pelargonium appendiculatum), which changes shape in response to environmental humidity, researchers at the Istituto Italiano ...