首页
登录
职称英语
[originaltext] Through a series of experiments an American scientist has obt
[originaltext] Through a series of experiments an American scientist has obt
游客
2024-06-08
67
管理
问题
Through a series of experiments an American scientist has obtained an understanding of the social structure of the most complex of ant societies. The ants examined are the only creatures other than man to have given up hunting and collecting for a completely agricultural way of life. In their underground nests they cultivate gardens on soil made from finely chopped leaves. This is a complex operation requiring considerable division of labor. The workers of this type of ants can be divided into four groups according to size. Each of the groups performs a particular set of jobs.
The making and care of the gardens and the nursing of the young ants are done by the smallest workers. Slightly larger workers are responsible for chopping up leaves to make them suitable for use in the gardens and for cleaning the nest. A third group of still larger ants do the construction work and collect fresh leaves from outside the nest. The largest are the soldier ants, responsible for defending the nest.
To find out how good the various size-groups are at different tasks, the scientist measured the amount of work done by the ants against the amount of energy they used. He examined first the gathering and carrying of leaves. He selected one of the size groups, and then measured how efficiently these ants could find leaves and run back to the nest. Then he repeated the experiment for each of the other size-groups. In this way he could see whether any group could do the job more efficiently than the group normally undertaking it.
The intermediate-sized ants that normally perform this task proved to be the most efficient for their energy costs, but when the scientist examined the whole set of jobs performed by each group of ants it appeared that some sizes of worker ants were not ideally suited to the particular jobs they performed.
选项
A、Repeated measurements of the sizes of ants.
B、Systematic observations of ants and nests.
C、Simulated experiments on ants behavior.
D、Gathering sample nests and ants.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3624743.html
相关试题推荐
[originaltext]Cultureshockcanbedescribedasthefeelingofconfusionan
[originaltext]Cultureshockcanbedescribedasthefeelingofconfusionan
[originaltext]Cultureshockcanbedescribedasthefeelingofconfusionan
[originaltext]Iamoneofthemanycitypeoplewhoarealwayssayingthatg
[originaltext]Iamoneofthemanycitypeoplewhoarealwayssayingthatg
[originaltext]Iamoneofthemanycitypeoplewhoarealwayssayingthatg
[originaltext]W:Couldyoutellmeabitaboutwhyyouwantedtobeadoctoran
[originaltext]W:HiFrank.Whatareyouupto?IsthatreallyaFrenchgrammar
[originaltext]W:HiFrank.Whatareyouupto?IsthatreallyaFrenchgrammar
[originaltext]M:Pleasetakeaseat,andwecanhavealittlerestbeforethel
随机试题
A…………filmindustryB……………movietheatreC…………first—runcinema
Smokingisharmfultoourhealthandisextremelyhazardoustochildren.Par
防止胫骨前、后移位的韧带是()A.胫侧副韧带 B.腓侧副韧带 C.髌韧带
关于“日益增长的美好生活需要”认识不正确的是()。A.社会需要的多层次多样化
影响沥青混合料施工和易性的首要因素是施工条件的控制。()
产程中,以下列何项判断胎头的高低A.耻骨联合上与胎头的关系 B.胎头双顶径与坐
党的十八大把科学发展观列人党的指导思想。科学发展观最鲜明的精神实质是()A.
送电合闸操作应按照()的顺序进行。(A)断路器(开关)—电源侧隔离开关(刀闸)—
关于气滞,下列哪一项叙述欠妥 A.疼痛性质为胀痛 B.部位固定不移,症状时轻
个人住房贷款的法律和政策风险点主要集中在()。A.借款人主体资格风险 B.合
最新回复
(
0
)