Question

At which point on the phylogenetic tree shown above did aiborne spores evolve?

At which point on the phylogenetic tree shown above did alternation of generations evolve?

At which point on the phylogenetic tree shown above did dominant sporophyte generation evolve?

At which point on the phylogenetic tree shown above did flowers evolve?

At which point on the phylogenetic tree shown above did seeds evolve?

8 Angiosperms Gymnosperms Ferns and Horsetails Lycophytes Hornworts Mosses Liverworts Coleochaete and Chara

Answer 1

2, airborne spores first came in bryophytes.

1, all plants including algae show alternation of generation.

5, algae and bryophytes have dominant gametophyte whereas pteridophytes gymnosperms and angiosperms have dominant sporophyte.

8, only angiosperms have flowers.

7, both gymnosperms and angiosperms are seeded plants.

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