首页
登录
职称英语
Caterpillars off all species produce an identical hormone called "juvenile hormo
Caterpillars off all species produce an identical hormone called "juvenile hormo
游客
2025-02-26
22
管理
问题
Caterpillars off all species produce an identical hormone called "juvenile hormone" that maintains feeding behavior. Only when a caterpillar has grown to the right size for pupation to take place does a special enzyme halt the production of juvenile hormone. This enzyme can be synthesized and will, on being ingested by immature caterpillars, kill them by stopping them from feeding. Which of the following, if true, most strongly supports the view that it would not be advisable to try to eradicate agricultural pests that go through a caterpillar stage by spraying croplands with the enzyme mentioned above?
选项
A、Most species of caterpillar are subject to some natural predation.
B、Many agricultural pests do not go through a caterpillar stage.
C、Many agriculturally beneficial insects go through a caterpillar stage.
D、Since caterpillars of different species emerge at different times, several sprayings would be necessary.
E、Although the enzyme has been synthesized in the laboratory, no large-scale production facilities exist as yet.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3973511.html
相关试题推荐
Caterpillarsoffallspeciesproduceanidenticalhormonecalled"juvenilehormo
2.Spidersofmanyspecieschangecolortomatchthepigmentationoftheflower
ThebodyofanyoneinfectedbyvirusXwill,afteraweek,produceantibodiesto
Scientificresearchthatinvolvesinternationalcollaborationhasproducedpaper
54.Thebrainsofidenticaltwinsaregeneticallyidentical.Whenonlyoneofap
Prolongedandunseasonablefrostsproducefrostringsindeciduoustrees,which
Researchersstudyingsetsofidenticaltwinswhowereraisedapartindissimilar
Byexaminingfossilizedbeetles,aresearchteamhasproducedthemostdetailed
Thepresenceofmicroorganismsthatproduceatoxincausesseawatertoturnbrow
Aspartofadelicatelybalancedsystem,thehumanheartsecretesahormone,as
随机试题
Althoughachangeinmanagementmayappearto(i)_____ashiftinacompany’sfo
[originaltext]W:Mr.Watson,Iwonderwhetherit’spossibleformetotakeava
小学社会《当危险发生的时候》
为了保障统计工作的统一性,《统计法》规定,制定统计调查项目应当同时制定该项目的(
关于施工预算和施工图预算性质和编制依据的说法,正确的是()。A、施工预算的编
2011年4月人民币贷款余额同比增长:() A.15.7% B.17.5
“体者,载知识之车而寓道德之舍也”出自()。 A.《论语》B.《孟子》
一住店客人未付房钱即想离开旅馆去车站。旅馆服务员揪住他不让走,并打报警电话。客人
西安市某工程建设项目,从国外进口某大型设备,重量800吨,装运港船上交货价为50
安装螺翼式水表,表前与阀门应有的直线管段长度是()。A.不小于4倍水表接口
最新回复
(
0
)