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In a relationship of strict mutual dependence, one species relies entirely on the other for survival. Yucca plants exhibit such a relationship with certain moths, such as Pronuba.

1. True
2. False
3. Indeterminate
4. Not applicable

Correct answer: True

Solution

Yucca plants and Pronuba moths form a strict mutual dependence: the moth pollinates the yucca, and the yucca provides a place for the moth to reproduce. Because each species relies on the other, the statement is true.

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