(A) Cleistogamous flowers do not open at all, ensuring that only self-pollination occurs within the flower. In $Commelina$ $\text{benghalensis}$, the

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(A) Cleistogamous flowers do not open at all, ensuring that only self-pollination occurs within the flower. In $Commelina$ $\text{benghalensis}$, the plant produces both chasmogamous and cleistogamous flowers. The underground flowers are specifically cleistogamous, where autogamy (a type of self-pollination) takes place.