Section 2

objectives

• Identify the four main flower parts, and state the function of each.

• Describe gametophyte formation in flowering plants.

• Relate flower structure to methods of pollination.

• Describe fertilization in flowering plants.

vocabulary receptacle sepal petal stamen anther filament carpel pistil ovary style stigma embryo sac polar nuclei tube cell generative cell nectar double fertilization figure 30-5

Sepal

Ovule

This diagram shows a complete flower that has all four whorls of flower parts—sepals, petals, stamens, and carpels. Most species of flowering plants have flowers that have both stamens and carpels.

Pistil-

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