Biology 213 Exam 1Practice Key - Instruction.greenriver.edu

11. A leaf that bear 3 or more leave arising from the same node are calledA. acaulescent. B. alternate.C. opposite. D. whorled.12. (6) Explain three characteristics of the green algae called Charophyceans that make themthe likely "evolutionary forerunner” of the kingdom Plantae.The algae called charophyceans share with plants the same kind of cellulose organizingcomplexes in the cell membranes(organizing protein rosette), have peroxisomes for enzymestorage, have flagellated sperm (simpler plants), same chlorophyll molecules, develop a cellplate during cell division, some are multicellular, have chloroplasts, and share a greaterpercentage of genetic similarities.13. (4) Explain two characteristics of the kingdom Plantae that separate them from the greenalgae called Charophyceans.The algae called charophyceans do not practice alternation of generations, nor do theyhave an apical meristem or sporopollenin covered spores.14. (4) Explain two challenges that plants experienced to being successful in moving onto theland.Plants faced the issues of dealing with gravity, obtaining and securing water, dealing withthe loss of water, removing CO 2 from a dry environment, and anchoring to one site.15. (4) Explain two adaptations developed found in all land plants to overcome the challengesyou cited in question #14?To overcome the gravitation issues a molecule of lignin evolved to further stiffen the cellwalls which allowed plants to stand more erect. To obtain and secure water and to anchorthe plant a root system was developed. Stomata efficiency was developed to obtain CO 2 anda waxy cuticle layer covering air exposed surfaces prevented desiccation.Biology &213 3Exam 1Mr. BrumbaughPage Score .