Unformatted text preview: ornamental shrub. Sepal Petal Carpel Stamen anther filament stigma Thunbergia grandiflora is an ornamental climbing plant; very attractive, but can be invasive in some countries. The flower petals (blue or white) are joined together to form a tube, except at their tips. When a bee enters this tube to reach the nectar, the anthers deposit pollen on its back. When the bee visits an older flower, the pollen is picked up by the stigma. This is the principle of pollination. anthers deposit pollen on the bee’s back nectary petal tube style stigma bee’s ‘tongue’ reaching for nectary ovary Half flower of Thunbergia grandiflora showing pollination Flower parts of Caesalpinia ovary style © D.G. Mackeam...
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- Fall '11
- petals, Caesalpinia, Caesalpinia pulcherrima, Thunbergia grandiflora showing, anthers deposit