首页
登录
职称英语
Until recently, scientists did not know of a close vertebrate analogue to th
Until recently, scientists did not know of a close vertebrate analogue to th
游客
2025-02-26
19
管理
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. [br] 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:http://tihaiku.com/zcyy/3973658.html
相关试题推荐
Untilrecently,scientistsdidnotknowofaclosevertebrateanaloguetoth
Untilrecently,scientistsdidnotknowofaclosevertebrateanaloguetoth
Untilrecently,scientistsdidnotknowofaclosevertebrateanaloguetoth
Untilrecently,scientistsdidnotknowofaclosevertebrateanaloguetoth
Somesoilscientistshaveassertedthatdecayingmatterontheforestfloorisa
Aedesalbopictus,avarietyofmosquitothathasrecentlyestablisheditselfin
Untilrecentlyexpertsbelievedthatenvironment,notgenetics,largelydetermin
X-rayexaminationofarecentlydiscoveredpainting—judgedbysomeauthorities
Fragmentsofcharredantelopebonehaverecentlybeenfoundatamillion-year-ol
Arnold:IwasrecentlydeniedasealonanairlineflightforwhichIhadaconf
随机试题
WhatisitthatmadeSteveJobsspecial?Whatcanwelearnfromthisonce-i
超声波在混凝土内部的衰减与其频率的平方成正比。
分析一个特定区域的风险,关键是要判断( )。A.信贷资金安全的影响因素 B.
“同底数幂的乘法”教学片段: 师生共同探索归纳总结出同底数幂的乘法法则后,进入
97、中性点不接地系统的设备外绝缘配置至少应比中性点接地系统配置高(),
A题干符号规律为ABCABD,只有A项符合此规律。故答案选A。
A.推动作用 B.温煦作用 C.防御作用 D.固摄作用 E.气化作用护卫
影响牙周病的系统疾病如下,应除外A.糖尿病 B.甲状腺功能亢进症 C.冠心病
(2018年真题)黄河公司2017年12月1日购入甲股票,并指定为以
下列各项中,属于黑客常用的入侵手段的有()。A、字典攻击 B、IP嗅探与欺骗
最新回复
(
0
)