material_art_science_experiments
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- beecellculture.pdf
- 2016/10/20 13:05
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- 2016/12/10 15:56
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- environmental-bacteria.pdf
- 2017/02/07 22:30
- 1.1 MB
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- 2017/04/05 16:02
- 814.1 KB
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- 2017/01/22 20:53
- 245.4 KB
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- 2017/01/05 11:40
- 2.4 MB
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- 2016/12/10 15:56
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- 2016/12/10 15:56
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- 2017/05/03 12:16
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- 2017/01/13 08:17
- 284.8 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
material_art_science_experiments.txt · Last modified: 2016/02/06 20:57 by ami