昆虫学概论（general entomology）.doc

昆虫学概论（general entomology） Introduction part I. brief answer: 1. Characteristics of insect class. 2. Master the relationship between insects and human beings. 3, the manifestations and causes of insect flourish. 4. What are the other phyla of arthropods? 5, the main recognition characteristics of the spider class. Two. Fill in the blanks: 1, at present has been named insects in about 1 million, accounting for the animal community known species of 2/3. 2. Cordyceps sinensis, referred to in Chinese traditional Chinese medicine, is especially distributed in alpine meadows located in the Qinghai Tibet Plateau and its marginal regions Cordyceps sinensis, parasitic on the larvae of the genus moths, and the worms and fungi that form after disease. 3, March 2003, Chinese State Environmental Protection Bureau announced the 16 list of invasive species, including Eupatorium adenophorum, Mikania micrantha, Alternanthera philoxeroides, Ragweed, Lolium, Spartina, Eichhornia crassipes, sorghum, opogonasacchari, slash pine mealybug, American white moth, Dendroctonus valens, African snail, snail and frog. 4, insect radiation sterility technology is the use of cobalt, -60, cesium, -137 emitted gamma ray or accelerator produced by the electron beam, pests, insects, pupae or adults A certain dose of irradiation, the loss of male reproductive function. 5, insect intraspecific pheromones can be divided into sex pheromone, aggregation pheromone, alarm pheromone and marker pheromone It is beneficial to its essence, self-interest, mutual benefit, resistance and its compounds. Three, thinking 1, Qin Se (Hans Zinsser) said in 1934, the fate of a nations destiny, spears, swords, bows and arrows organs Guns, coupled with more destructive explosive weapons, are no better than small lice, mosquitoes and flies. Tell me how you understand this sentence. 2, 2008.10.21 start, Sichuan Guangyuan maggot citrus event broke out, try to talk about your understanding of this event. 3, give an example of whic