urban-artfarm-2013
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- 1-s2.0-s0731708517314528-main.pdf
- 2019/08/21 14:45
- 1.2 MB
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- 2019/11/25 17:42
- 46.4 KB
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- 2000×2000
- 2019/09/26 10:31
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- 2019/08/21 12:50
- 91.8 KB
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- 2019/11/19 17:21
- 1.1 MB
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- 2019/09/18 10:16
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- 2019/09/18 10:17
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- soil-water_solution.jpg
- 1500×2000
- 2019/09/26 16:37
- 186.7 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
urban-artfarm-2013.txt · Last modified: 2020/03/20 17:33 by ami