2008生物联赛试题 解析（2008 biological tournament examination questions analysis）.doc

2008生物联赛试题 解析（2008 biological tournament examination questions analysis） In 2008 the national biological League detailed analysis (multichoice part, for reference only) 1 cell mitosis occurred in the meristematic zone, followed by differentiation, and plant root cells almost no mitosis 2 endothelial layer not only has Yu Genzhong, such as pine needles 3 understand the difference between the various plant leaf morphology, leaf curl mainly on epidermal Bulliform cell function The basic process of 4 angiosperm reproductive cells produced, only the size of the megaspore mother cell meiosis of megaspore - process, other processes are mitosis 5 full of water and the water potential of cell was 0 and the solution into any concentration in the water solution was less than 0, so the water from the water height to the water flow downhill 6 plant water the two main ways for transpiration and root pressure, the leaves of the deciduous trees have not yet commenced in early spring, the transpiration is very weak, so the main stream for root pressure. The 7 flood root term in the anaerobic environment, a lot of alcohol fermentation produces physiological stress on plant Synthesis of PGAld 8 photosynthesis in the final product of starch in the chloroplasts, and sucrose synthesis in the cytoplasm 9 flowers in the reproductive organs of plants, flowers in Citis metabolic pool, so the respiration focuses on reproductive organs in Florescence During the development of age affect plant 10 plants, many perennial plants in not mature age not by the emphasis on vegetative growth to reproductive growth focus 11 effects of plant photoperiod is one of the red pigment phytochrome, can change the phytochrome PR type to Pfr type, the role of the dark period interrupt effectively, and make the far red Pfr to Pr, the other two opposite, light on the light cycle has little effect. 12 memory contents can be understood as the organic matter only through phloem transport 13 reasons for the separation