Seed structure. Diagram showing the anatomical structure of a seed (grain) from a barley plant. The seed consists of the embryo (red,upper left) and the endosperm (rest of the seed),which is the food supply for the embryo (from which a new plant forms). The endosperm contains starch (white grains),amylase (yellow) and aleurone cells (green). The aleurone is a protein layer that is triggered by hormomes from the embryo to release amylase to break down the starch during seed germination. The embryo is labelled a diploid (2n) and the endosperm as triploid (3n) as found in double fertilization in angiosperms (flowering plants) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Leroy, Francis / Biocosmos |
Bildgröße: | 5000 px × 3511 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |