Mallow pollen. Coloured scanning electron micrograph (SEM) of mallow (Malva sp.) pollen grains on a pistil. The grains have a spiked outer wall (exine),which may assist in their dispersal by improving their adherence to pollinating insects. Each pollen grain contains a male gamete (reproductive cell) that is intended to fertilise an egg or ovule (female gamete),and initiate the formation of a seed for a new plant. Pistils hold a plant's female reproductive structures | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Nishinaga, Susumu |
Bildgröße: | 2949 px × 3913 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |