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
外语
Until recently, scientists did not know of a close vertebrate analogue to the extreme form of altruism observed in eusocial inse
Until recently, scientists did not know of a close vertebrate analogue to the extreme form of altruism observed in eusocial inse
admin
2014-09-18
29
问题
Until recently, scientists did not know of a close vertebrate analogue to the extreme form of altruism observed in eusocial insects like ants and bees, whereby individuals cooperate, sometimes even sacrificing their own opportunities to survive and reproduce, for the good of others. However, such a vertebrate society may exist among un- der ground colonies of the highly social rodent Heterocephalus glaber, the naked mole rat.
A naked mole rat colony, like a beehive, wasp s nest, or termite mound, is ruled by its queen, or reproducing female. Other adult female mole rats neither ovulate nor breed. The queen is the largest member of the colony, and she maintains her breeding status through a mixture of behavioral and, presumably, chemical control. Queens have been long-lived in captivity, and when they die or are removed from a colony one sees violent fighting for breeding status among the larger remaining females, leading to a takeover by a new queen.
Eusocial insect societies have rigid caste systems, each insects’ s role being defined by its behavior, body shape, and physiology. In naked mole rat societies, on the other hand, differences in behavior are related primarily to reproductive status(reproduction being limit- ed to the queen and a few males), body size, and perhaps age. Smaller non-breeding members, both male and female, seem to participate primarily in gathering food, transporting nest mate- rial, and tunneling. Larger nonreaders are active in defending the colony and perhaps in removing dirt from the tunnels. Jarvis’ work has suggested that differences in growth rates may influ- ence the length of time that an individual performs a task, regardless of its age. Cooperative breeding has evolved many times in vertebrates, but unlike naked mole rats, most cooperatively breeding vertebrates(except the wild dog, Lycaon pictus)are dominated by a pair of breeders rather than by a single breeding female. The division of labor within social groups is leas pronounced among other vertebrates than among naked mole rats, colony size is much smaller, and mating by subordinate females may not be totally suppressed, whereas in naked mole rat colonies sub- ordinate females are not sexually active, and many never breed.
It can be inferred from the passage that the performance of tasks in naked mole rat colonies differs from task performance in eusocial insect societies in which of the following ways?
选项
A、In naked mole rat colonies, all tasks are performed cooperatively.
B、In naked mole rat colonies, the performance of tasks is less rigidly determined by body shape.
C、In naked mole rat colonies, breeding is limited to the largest animals.
D、In eusocial insect societies, reproduction is limited to a single female.
E、In eusocial insect societies, the distribution of tasks is based on body size.
答案
B
解析
裸鼹鼠种群的工作和社会性昆虫的工作相比有何不同?这种比较在第三段一开始给出结论。L28—36社会性昆虫中确定因素有:行为、体型、生理。裸鼹鼠种群为:繁殖地位,身体大小,可能还有年龄。∴B正确,在裸鼹鼠种群中,工作较少被体型严格确定。A、C、D、E均不合原文此处叙述。
转载请注明原文地址:https://kaotiyun.com/show/UStO777K
本试题收录于:
GMAT VERBAL题库GMAT分类
0
GMAT VERBAL
GMAT
相关试题推荐
In1947agroupoffamouspeoplefromtheartworldheadedbyanAustrianconductordecidedtoholdaninternationalfestivalof
Hestudiedhardatschoolwhenhewasyoung,______contributestohissuccessinlaterlife.
SpeakerA:Bob,______?SpeakerB:Youmustbekidding.Lasttimeyoualmostmademeball.
Ifworkershadbeenpaiddecentwages,profits______sogreat.
Alltheirattemptsto_____thechildfromtheburningbuildingwereinvain.
Mr.WangteachesEnglishinamiddleschool.Helikeshisworkverymuch.Hewanted【C1】______ateacherevenwhenhewasayoung
Imagineaschoolthatexpecteditsstudentstobecomeliterate(有读写能力的)withoutanyformalinstruction.Mostparentswouldbeal
TheannualcampaigntomakeSingapore’sthreemillionpeoplemorepoliteendedyesterdayandwasimmediatelyfollowedbyanother
In1984,PresidentRonaldReaganproposedthattheUnitedStates______alaunchlaboratoryforaneweraofspaceexploration.
Crimehasitsowncycles,amagazinereportedsomeyearsago.Policerecordsthatwerestudiedforfiveyearsfromover2400cit
随机试题
钩端螺旋体致病的毒素成分包括
A稀盐酸B稀硝酸C稀硫酸D醋酸盐缓冲液(pH3.5)E盐酸重金属检查的反应条件是
A.鉴别培养基B.厌氧培养基C.基础培养基D.营养培养基E.选择培养基能判断细菌对糖或蛋白质的分解能力的培养基是
施工现场运输道路的宽度应符合单行道不小于()m。
()是以服务器为核心,利用网络来传送音视频数据和文件,实现自动化的方式和并行的工作模式,实现资源共享、提高工作效率。
根据《财政部关于印发〈企业产品成本核算制度〉(试行)的通知》,下列工程成本费用中,属于其他直接费用的是()。
“经营单位”栏:“征免性质”栏:
下列选项在性质上属于统计行政规章的是()。
举世瞩目的“丝绸之路”是在()开通的。
根据我国宪法和有关法律的规定,我国县级人民代表大会或人民政府可以设立的机构有()。
最新回复
(
0
)