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
2024-01-13
11
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/3358949.html
相关试题推荐
Thesearchwas_________whenthefoggotthicker.A、calledoffB、calledonC、calle
Mr.Holmescalledatmanyschools_________helivedtoaskthemtoaccepthisson
In1866,sailorsonaGermanshipcalledPaulathrewabottlewithamess
In1866,sailorsonaGermanshipcalledPaulathrewabottlewithamess
In1866,sailorsonaGermanshipcalledPaulathrewabottlewithamess
Acertaintirecompanycanproducetiresatacostof$22,500perbatchplus$9
Accordingtothepassage,thefivewell-knownplanthormonesarenotusefulinc
Accordingtothepassage,thefivewell-knownplanthormonesarenotusefulinc
Caffeine,thestimulantincoffee,hasbeencalled"themostwidelyusedpsy
Caffeine,thestimulantincoffee,hasbeencalled"themostwidelyusedpsy
随机试题
[originaltext]Moreandmorepeoplearoundtheworldareusingwirelessormo
Someday,in【C1】______theouterplanetsofoursolarsystem,humankindwil
2016年4月,A市某建筑工地,一塔吊正在起吊模板,一块钢模板意外滑落,将
下列设备和技术中,()不属于数据安全策略范畴。A.SAN B.异地容灾 C.
张三系甲制药公司技术主管。2018年5月,张三私自接受乙制药公司聘请担任其技术顾
项目初步设计方案和投资概算报告的编制内容与项目可行性研究报告批复内容有重大变更或
A.阿司匹林 B.鱼精蛋白 C.尿激酶 D.维生素B12 E.维生素K直
下列关于各行业固定资产投资项目的最低资本金比例的描述中,不正确的是()。A.
一般来说,在其他条件不变时,商品价格变动的时间越长,其需求弹性( )。A.为零
(2017年真题)下列不属于政府的直接显性债务的是()。A.政府公债 B
最新回复
(
0
)