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CAPE Biology Unit 1 · 2006 · Paper 2 · Question 7(b)

Name the type of fertilisation exhibited by EACH of the following plants and briefly explain the mechanism being used: In the flower Chamaenerion angustifolia, the stamens and carpels reach maturity at different times. In the flower Lilium longiflorum, there is a wide separation of the anthers and the stigma. In Cajanus cajan, the pollen grains from mother plants do not germinate if placed on its own stigma. In Mangifera indica, honey bees visit the flowers bringing pollen from other flowers. In Carica papaya, male and female flowers are found on separate plants and pollen passes from male to female plants.

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  1. 7(a)Describe the structure of the anther and the way in which pollen grains are formed within it.[10 marks]
  2. 7(c)Discuss the advantages and disadvantages of each type of reproduction in these plants.[5 marks]

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