Plant Traits Analysis

The question asks us to identify a plant group that possesses a specific combination of key traits: a dominant sporophyte generation in its lifecycle, the presence of vascular tissue, and the absence of seeds.

Let's look at the given options and analyze their characteristics:

• Mosses: Mosses belong to the Bryophytes. In Bryophytes, the gametophyte generation is dominant, and they lack vascular tissue (xylem and phloem). They do not produce seeds. This combination does not fit the criteria.
• Ferns: Ferns belong to the Pteridophytes. In Ferns, the sporophyte generation is dominant. They possess vascular tissue (xylem and phloem) for the transport of water and nutrients. Ferns reproduce via spores and do not produce seeds. This combination perfectly matches all three criteria mentioned in the question.
• Cycads: Cycads are Gymnosperms. In Gymnosperms, the sporophyte generation is dominant, and they have well-developed vascular tissue. However, they produce seeds (though they are naked seeds, not enclosed within a fruit). The presence of seeds means they do not fit the third criterion (lack of seeds).
• Monocots: Monocots are a type of Angiosperm (flowering plants). In Angiosperms, the sporophyte generation is dominant, and they have highly developed vascular tissue. They produce seeds (enclosed within a fruit). The presence of seeds means they do not fit the third criterion (lack of seeds).

To summarize the key traits of each group concerning the question:

Based on this analysis, Ferns are the only plant group among the options that exhibit all three required traits: sporophyte dominant lifecycle, presence of vascular tissue, and absence of seeds.