The answers are
Carpels are modified leaves that form the female reproductive part of the flower of angiosperm plants. The set of all carpels is called gynoecium.
A stamen is each of the male floral organs carrying pollen sacs (microsporangia) that originate pollen grains (microspores). The set of all stamens is called androceo.
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The male sex unit or pollen is made by the anther inside the pollen sacs.
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