start
Media Manager
Namespaces
Choose namespace
Media Files
Files in hamburgmaschine:hinges_handles
- mscreenshot297.jpg
- 647×582
- 2019/02/02 15:23
- 125.6 KB
- mscreenshot298.jpg
- 1078×1079
- 2019/02/02 15:21
- 335.6 KB
- screen_shot_2019-03-02_at_17.29.13.png
- 1229×985
- 2019/03/03 20:07
- 399 KB
- screen_shot_2019-03-02_at_17.31.00.png
- 1069×932
- 2019/03/03 20:07
- 326.4 KB
File
- Title:
- Hollyhock pollen
- Date:
- 2023/09/13 09:01
- Filename:
- 800wm.jpg
- Caption:
- Pollen. Coloured scanning electron micrograph (SEM) of a pollen grain of the garden hollyhock, Althaea rosa. Its outer wall (exine) has a spiky structure. When the pollen grain, containing the male gametes, lands on the stigma of a flower of the same species, it germinates. A pollen tube grows from the pollen grain & down to the flower's ovaries. The ovules are then fertilised & a seed is formed. Magnification: x200 at 6x6cm size.
- Photographer:
- Science Photo Library
- Copyright:
- DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY
- Format:
- JPEG
- Size:
- 155KB
- Width:
- 800
- Height:
- 797
- Keywords:
- hollyhock, pollen, althaea, rosa, garden, hollyhock, pollen, of, botany, plant, sem, coloured, scanning, electron, micrograph, grain, allergen, allergy, cause, sneezing, causing, sneeze, nature, plants, reproduction, reproductive, pollen
- References for:
- pollinations
start.txt · Last modified: 2024/05/30 06:37 by ami