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Petals are modified leaves which surround the reproductive parts of flowers. Together, all of the petals of a flower are called a corolla.
The most common types of pollination are:
- Wind pollination: flowers are small and dull, with little or no scent, and often no petals at all. They produce large amounts of pollen which is scattered by the wind.
- Insect pollination: flowers show well in the ultraviolet range, often have honey guides. These are lines leading from the petal to the nectar. Use of scent is also common.
- Bird pollination: large, colourful flowers with nectar.
- Darwin, Charles 1877. The different forms of flowers on plants of the same species. London: Murray.
- Knuth, Paul et al 1906. Handbook of flower pollination: based upon Hermann Müller's work 'The fertilisation of flowers by insects'. Oxford University Press.