BIOL 180 Chapter Notes - Chapter 31: Irradiation, Rechargeable Battery, Zygote
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BIOL 180 Full Course Notes
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They analyze: (1) morphological traits (2) fossil record (3) phylogenetic trees estimated from similarities and differences in dna sequences from homologous genes and whole genomes. Analyzing morphological traits: similarities between green algae and land plants: Green algae have long been hypothesized to be closely related to land plants because these key traits are similar in two groups: Chloroplasts contain photosynthetic pigments chlorophyll a and b and the accessory pigment beta-carotene. They have similar arrangements of internal membrane bound sacs called thylakoids. Cell walls, sperm, and peroxisomes are similar in structure and composition. Chloroplasts synthesize starch as storage product: the two green algal groups most similar to land plants are the: Charopycheae(stoneworts: because the species in these groups are multicellular and live in ponds/freshwater environments, it is believed that land plants evolved from multicellular green algae living in freshwater habitats, major morphological differences among land plants:
