首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Despite not being terribly smart as individuals, wasp (黄蜂) colonies build and maintain a complex nest that lasts many generation
Despite not being terribly smart as individuals, wasp (黄蜂) colonies build and maintain a complex nest that lasts many generation
admin
2010-01-13
28
问题
Despite not being terribly smart as individuals, wasp (黄蜂) colonies build and maintain a complex nest that lasts many generations. Just how these social wasps coordinate this task has always been a mystery. But now a mathematical model suggests that one key factor drives their behavior: the amount of water in the nest.
Social wasps cannot learn from one another—unlike bees, which use a complex dance to tell nest mates where sources of nectar (花蜜) are. Nor do they use pheromones (信息素) the way ants do to lead other ants to food.
Robert Jeanne of the University of Wisconsin-Madison proposed that wasps set up a demand-driven chain of information. At the end of the chain, builder wasps monitor the nest and when necessary, request pulp from pulp forager wasps. They in turn demand water from water foragers in order to make the pulp.
But biologist Istvan Karsai of East Tennessee State University in Johnson City, Tennessee, and his team found that social wasps in Panama don’t actually work that way. They removed either builders or pulp foragers from a colony of a species called Metapolybia aztecoides. Although that should break up the so-called information chain, it did not significantly alter the amount of water being brought into the nest. They also found that the wasps could change roles, something that Jeanne didn’t expert. For instance, when the researchers sprayed a surplus of water onto the nest, water foragers quickly became builders, and nest building increased.
Based on their observations, Karsai’s team developed a mathematical model that shows that wasps achieve their complex behaviour simply by monitoring the level of water in the nest—what he calls the"common stomach" of the colony. He believes wasps infer what the level is when they exchange fluids on meeting each other, a behaviour called trophallaxis that is common in many social insects.
To test the model, Karsai simulated changes in the model colony, for example by removing pulp foragers or builders. "What’s interesting is that in every case the model responds like the actual colony in Panama, "says Karsai.
What can we infer from the first two paragraphs?
选项
A、Bees are smarter than wasps.
B、Wasps have nothing in common with bees.
C、Unlike bees, wasps live in colonies.
D、Wasps use pheromones to lead other wasps to food.
答案
A
解析
推断引申题。第1、第2段描述道“单个的黄蜂并不特别聪明”、“它们不能互相学习”、“不会像蜜蜂一样跳舞告诉同伴花朵在何处”。这一切都说明蜜蜂比黄蜂聪明,所以应选A。
转载请注明原文地址:https://jikaoti.com/ti/OQgjFFFM
0
在职申硕(同等学力)英语
相关试题推荐
IntheUSA,85%ofthepopulationovertheageof21approveofthedeathpenalty.Inthemanystateswhichstillhavethedeath
Somepeoplefeelsadaboutglobalizationbecausetheybelieveitwill______Internetwasoriginallydesigned______
We’llalltakeavacationinthemountainsassoonasIfinishworking______myproject.
Experiencedbaseballfielderscantellhowfaraballisgoingtotraveljustbylisteningtothecrackofthebat.Iftheydidn
Experiencedbaseballfielderscantellhowfaraballisgoingtotraveljustbylisteningtothecrackofthebat.Iftheydidn
Onlywhen(herealized)thatthere(wouldbe)more(difficulties)aheadthanheexpected(hecameto)meforhelp.
DialogueandcooperationbetweentheNorthandtheSouthontheurgenteconomicproblemsintheworldshouldbe______andstren
Thisincident______meinmybeliefthatloving-motherforcealoneisincomplete,withoutfather’sdiscipline.
Thegovernmentdecidedtotakea_____actiontostrengthenthemarketmanagement.
随机试题
某空管安装公司中标仪表着陆系统和全向信标台安装合同,合同约定工期6个月。工期惩罚额为1000元/d,采用固定总价合同,保修期一年。该工程于2007年4月1日开工。在施工过程中,因为设计变更使得安装公司原采购的主要材料规格不符合设计要求,只能重新采购。因此,
北京冬奥会期间,冬奥会吉祥物“冰墩墩”纪念品十分畅销。销售期间某商家发现,进价为每个40元的“冰墩墩”,当售价定为44元时,每天可售出300个,售价每上涨1元,每天销量减少10个。现商家决定提价销售,若要使销售利润达到最大,则售价应为:
Glisson鞘
不能通过胎盘,生后发育最快的免疫球蛋白是
A.LH受体B.FSH受体C.雄烯二酮D.孕烯醇酮E.睾酮甾体激素的前身是
隔离的种类不包括
乳腺髓样癌的病理组织学特点是
建设工程施工合同应具备的条件()。
为推进现代化农业建设,“十一五”时期,我们要实施的战略包括()。
Itisnecessarythattheamountoffatinyourfoodbelimited.
最新回复
(
0
)