The American holly tree requires a "male" tree and a "female" tree to produce red berries in the winter. This indicates that the male flowers lack ________ and the female flowers lack ________.

Question

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Male flowers lack carpels, which are the female reproductive structures that produce ovules. Female flowers lack stamens, which are the male reproductive structures that produce pollen. Therefore, the holly tree requires separate male and female individuals to cross-pollinate and produce berries.

The American Holly Tree Requires a "Male" Tree and a "Female