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Big Bend National Park in Texas is mostly Chihuahuan desert where rainfall averages about 10 inches per year.Yet when hiking in this bone-dry desert,it is not uncommon to encounter mosses and ferns.One such plant is called "flower of stone." It is not a flowering plant,nor does it produce seeds.Under arid conditions,its leaflike structures curl up.However,when it rains,it unfurls its leaves,which form a bright green rosette on the desert floor.Consequently,it is sometimes called the "resurrection plant."
-Upon closer inspection of the leaves of flower of stone,one can observe tiny,cone-like structures.Each cone-like structure emits spores of two different sizes.Further investigation also reveals that the roots of flower of stone branch only at the growing tip of the root,forming a Y-shaped structure.Consequently,flower of stone should be expected to possess which other characteristics?
1)a gametophyte generation that is dominant
2)lignified vascular tissues
3)microphylls
4)spores that are diploid when mature

Question

Quizplus · Accepted Answer

Based on the information given, we can infer that flower of stone is a non-seed producing plant with spores of two different sizes. This means it likely belongs to the category of plants known as ferns, which typically have lignified vascular tissues and microphylls. Additionally, the mention of a Y-shaped structure in the roots does not give any indication of the dominance of a gametophyte generation or the diploid nature of spores. Therefore, the best answer is C) 2 and 3 only.

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