![Flower structure ,[object Object],[object Object],[object Object],[object Object],[object Object],© 2008 Paul Billiet ODWS](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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Flowerstructure
- 1. ANGIOSPERMS The flowering plants Spring crocus Crocus vernus © 2008 Paul Billiet ODWS
- 5. Flower structure Dog rose Rosa canina © 2008 Paul Billiet ODWS
- 6. Flower structure © 2008 Paul Billiet ODWS Stigma Style Ovary Petal Sepal Filament Anther
- 8. Pollination © 2008 Paul Billiet ODWS Small skipper Thymelicus flavus on marsh thistle Cirsium palustris
- 9. Pollination © 2008 Paul Billiet ODWS The honey bee Apis melifera on marsh thistle Cirsium palustris
- 13. Fertilisation © 2008 Paul Billiet ODWS Style Stigma Pollen grain Ovule Embryo sac Pollen tube Ovary
- 14. Fertilisation © 2008 Paul Billiet ODWS Egg cell Polar nuclei Embryo sac Micropyle
- 15. Fertilisation © 2008 Paul Billiet ODWS Pollen grains of the daisy Bellis perennis
- 16. Fertilisation © 2008 Paul Billiet ODWS Germinating pollen grains of blue bell, Hyacinthoides non-scripta
- 17. The double fertilisation © 2008 Paul Billiet ODWS Pollen tube Pollen tube entering micropyle Male nucleus + egg cell = zygote (2n) Male nucleus + 2 polar nuclei = endosperm nucleus (3n) Ovule Nucellus
- 18. From flower to fruit Marsh marigold Caltha palustris © 2008 Paul Billiet ODWS
- 19. Fruits and seed dispersal © 2008 Paul Billiet ODWS Animal dispersal Strawberry Fragaria vesca Wind dispersal Ragwort Senecio Explosive dispersal Bird’s foot trefoil Lotus corniculatus Animal dispersal Wood avens Geum urbanum