༤ ིི ིི ཇ ཨྰ་ę་ ༤ 。 7 7.7 7.8 600 Millions of years ago 400 500. 200 7009 ACTIVITY 7 The diagram below represents a phylogenetic tree of different groups of plants. Study the diagram and answer questions that follow . Land plants Paleozoic Mesozoic Cend Era Simpler charophyceans Complex charophyceans Charo- phyceans. здо Bryophytas Liverworts Homworts Origin of land plants HOBEB Vascular planta, Seed plants Pteridophytes Gymno Anglo- spons sperms Lycophytes Extinct pratracheophytes Fems Extinct progymnosperms 0000 Gymnosperms Angiosperms Flowers Early seed plants Early vascular plants Ancestral green algae According to the phylogenetic tree, which plant appeared first on earth? In which area did the first angiosperms appear? (1) (1) Which characteristic separates the bryophytes from charophyceans? (1) How long ago did the progymnosperms become extinct? (2 Tabulate TWO differences between the gymnosperms and the angiosperms with regards to reproduction. (5 Which plants, mosses or angiosperms are more closely related to the gymnosperms? C Explain your answer in QUESTION 7.6. Angiosperm plants undergo sexual and asexual reproduction. Explain TWO advantages of sexual reproduction for survival of plants
