1) the structural integrity of bacteria is to peptidoglycan as the structural integrity of plant spores is to a) lignin. b) cellulose. c) secondary compounds. d) sporopollenin. topic: concept 29.1 skill: knowledge/comprehension 2) all of the following are common to both charophytes and land plants except a) sporopollenin. b) lignin. c) chlorophyll a. d) cellulose. e) chlorophyll b. topic: concept 29.1 skill: knowledge/comprehension 3) in animal cells and in the meristem cells of land plants, the nuclear envelope disintegrates during mitosis. this disintegration does not occur in the cells of most protists and fungi. according to our current knowledge of plant evolution, which group of organisms should feature mitosis most similar to that of land plants? a) unicellular green algae b) cyanobacteria c) charophytes d) red algae e) multicellular green algae