Which of the following is a polyploid gymnosperm?

Ephedra

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Mango

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Guava

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Apple

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Solution

The correct option is A Ephedra
Triploid and tetraploid chromosomes are examples of polyploidy. Polyploid cells and organisms are those containing more than two paired (homologous) sets of chromosomes. With the exception of three species of conifers, all natural polyploid species of gymnosperms belong to Ephedra.
Thus, the correct answer is option A.

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