Sporophyte stage is dominant in which plant group?

The correct answer is Vascular plants.Key Points

• The sporophyte stage is the dominant phase in vascular plants, which includes all plants except bryophytes (mosses, liverworts, and hornworts).
• In bryophytes, the gametophyte stage is the dominant phase, while the sporophyte is dependent on the gametophyte for survival. 
• Algae do not have a well-defined alternation of generations, and their life cycles can vary greatly depending on the type of algae.
• Pteridophytes, which include ferns and horsetails, have a dominant sporophyte stage that is independent of the gametophyte.
• The dominance of the sporophyte stage is characterized by the fact that it is the stage that produces the spores, which give rise to the next generation of plants.

Additional Information

• Bryophytes are small, non-vascular plants that grow in damp habitats.
  • They do not have true roots, stems, or leaves and rely on diffusion to transport water and nutrients.
• Algae are a diverse group of aquatic organisms that can range from single-celled organisms to large seaweeds.
  • They are not considered to be true plants because they lack specialized tissues and organs.
• Pteridophytes are vascular plants that reproduce by spores instead of seeds.
  • They have true roots, stems, and leaves, and can range from small herbaceous plants to large tree ferns.
• The alternation of generations is a life cycle that includes both a haploid (n) gametophyte and a diploid (2n) sporophyte stage.
  • In plants, the gametophyte produces gametes (eggs and sperm), which fuse to form a diploid zygote that develops into the sporophyte.
  • The sporophyte produces spores, which give rise to the next generation of gametophytes.