首页
登录
职称英语
Biologists have long debated about whether egg production in birds is biolog
Biologists have long debated about whether egg production in birds is biolog
游客
2024-01-10
28
管理
问题
Biologists have long debated about whether egg production in birds is biologically highly costly, some theorizing that egg production is energetically or nutritionally demanding. Lack, however, suggested that clutch size—the number of eggs a bird lays per breeding cycle—is far below the potential limit of egg production. He suggested that clutch size had instead evolved in relation to the number of young that the parents could successfully rear. Subsequently, most studies focused on limitations operating during chick rearing, particularly among altricial species (species in which the parents feed their young in the nest). Lack later recognized that in precocial species (species in which young feed themselves), clutch size might be explained by different factors—the availability of food for egg-laying females, for example. [br] The passage suggests that Lack would agree with which of the following statements about factors affecting clutch size in birds?
Consider each of the choices separately and select all that apply.
选项
A、In altricial species, clutch size is determined primarily by factors operating after eggs are laid.
B、In precocial species, clutch size is determined primarily by factors operating after eggs are laid.
C、In many bird species, clutch size generally remains well below the potential limit of egg production.
答案
A,C
解析
很多考生看到选项A时会纠结第四句究竟是不是拉克说的。实际上,选项A用第三句就能判断对错。第三句中,拉克认为“能养活多少就生多少”,而根据晚成型鸟类的定义,幼雏需要父母“养活”,因此晚成型鸟类的巢穴大小当然取决于产蛋之后的因素,即“养活能力”,因此选项A正确。C项同义改写第二句。B项根据第五句,早熟型鸟类取决于生蛋过程中雌鸟的营养,选项B错误。
转载请注明原文地址:https://tihaiku.com/zcyy/3349550.html
相关试题推荐
Somepaleontologistsdebatewhetherthediversityofspecieshas(i)______since
Somebiologistsarguethateachspecificallyhumantraitmusthavearisengradua
Whereasbiologistsmustmaintaina(i)_______attitudetowardthesubjectsofth
Biologists(i)____isolatedoceanicislandsliketheGalapagos,because,insuch
Ourbiologicaluniquenessrequiresthattheeffectsofasubstancemustbeverif
DavidBelasco’s1912BroadwayproductionofTheGovernor’sLadycreatedase
BiologistsstudyingwildmonkeyssometimesneedthegeneticmaterialDNAfro
Doyounormallyseefilmsatcinemasoronline? Well,itdependsonwhetherIt
Differentpeopleholddifferentviewsastowhetherparentsshouldadoptan
Thebarchartshowsthepetroleumproductionandconsumptionamong7regions
随机试题
PatientsStruckoffbyGPsA)Thousandsofpatientsarebeing
Tenyearsago,JoeAllenbeganstudyingadiversegroupofseventhgradersn
MD5常用于数据()保护。A.校验 B.完整 C.机密 D.可靠
我国已故著名逻辑学家金岳霖小时候听到“金钱如粪土,朋友值千金”这样两句话后,发现
货币型理财产品具有投资期限( ),资金赎回( ),本金、收益安全性高等主要特
哪一种病理类型的甲状腺癌预后最差A.乳头状腺癌 B.滤泡状腺癌 C.未分化癌
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
事故应急管理不能局限于事故发生后的应急救援行动,而应做到“预防为主,常备不懈”。
4岁儿童。出生时接种过卡介苗,此次因肺炎入院。作OT1:2000,72小时后硬结
A.妊娠满37周~不满42足周分娩 B.妊娠满28周~40周 C.妊娠满12
最新回复
(
0
)