Pollen grain on a chip. Scanning electron micrograph (SEM) of a pollen grain from an Aponogeton sp. plant on a digital camera chip. Pollen grains are reproductive structures produced by the male parts of flowering plants. The grain has a spiked outer wall (exine),which may assist in its dispersal by improving its adherence to pollinating insects. Aponogeton sp. plants are aquatic and are found in tropical to warm temperate regions of Africa,Asia and Australasia | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Oeggerli, Martin |
Taille de l’image : | 4832 px × 3614 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |