首页
登录
职称英语
According to the passage, the five well-known plant hormones are not useful in c
According to the passage, the five well-known plant hormones are not useful in c
游客
2025-02-26
9
管理
问题
According to the passage, the five well-known plant hormones are not useful in controlling the growth of crops because______ [br] The passage suggests that which of the following is a function likely to be performed by an oligosaccharin?
选项
A、To stimulate a particular plant cell to become part of a plant’s root system
B、To stimulate the walls of a particular cell to produce other oligosaccharins
C、To activate enzymes that release specific chemical messengers from plant cell walls
D、To duplicate the gene complement in a particular plant cell
E、To produce multiple effects on a particular subsystem of plant cells
答案
A
解析
The best answer is A. The last paragraph characterizes oligosaccharins as “specific chemical messengers” (lines 40-41). The passage indicates that these chemical messengers are “specific” in that, unlike the pleiotropic hormones, they are likely to have particular effects on particular plant cells. Choice A is correct because it is the only answer choice that describes an effect on a specific aspect of plant growth and development: stimulating a particular plant cell to become part of a plant’s root system. Choice B and C are incorrect because the last paragraph indicates that enzymes activate the release of oligosaccharins. Choice D is incorrect because, although oligosaccharins do affect the activity of the gene complement of a particular cell, they do not duplicate that complement. Choice E is incorrect because the second paragraph indicates that an oligosaccharin has a specific effect rather than multiple effects on plant cells.
转载请注明原文地址:https://tihaiku.com/zcyy/3974264.html
相关试题推荐
Accordingtothepassage,thefivewell-knownplanthormonesarenotusefulinc
Whichofthefollowingbestdescribestheorganizationofthepassage?[br]Itc
Whichofthefollowingbestdescribestheorganizationofthepassage?[br]Info
Whichofthefollowingbestdescribestheorganizationofthepassage?[br]Acco
Whichofthefollowingbestdescribestheorganizationofthepassage?[br]Whic
Thepassageischieflyconcernedwith______[br]Thepassagewarnsofwhichoft
Inthepassage,theauthorisprimarilyinterestedin______[br]Itcanbeinfer
Inthepassage,theauthorisprimarilyinterestedin______[br]Itcanbeinfer
Inthepassage,theauthorisprimarilyinterestedin______[br]Itcanbeinfer
Inthepassage,theauthorisprimarilyinterestedin______[br]Theauthoroft
随机试题
[originaltext]M:Hi.Mary.Howareyou?W:Fine,thanks.Howarethingsgoing?
[originaltext] InApril,2014,theFoodandDrugAdministration(FDA)issueda
按照工程造价构成划分,属于措施项目费的有()。A、工程定位复测费 B、环境保护
男性,19岁。右腹股沟部被刀刺伤30分钟,在当地医院加压包扎后急转院。查体:脉搏
患者男,50岁。突起呼吸困难,咳粉红色泡沫痰,血压190/100mmHg,诊为急
患者,女性,62岁。高血压病史10年,血压控制不良,本次因“高血压,脑出血”急诊
关于过碘酸一雪夫反应的染色反应叙述错误的是A.缺铁性贫血中幼红细胞呈阳性B.慢性
合同履行的跟踪策划的内容包括()。A、确定跟踪的对象B、确定收集信息的范围C
有三层楼板的影剧院,其建筑高度为20m,该建筑属于()。A.单层 B.多层
根据需要只对部分财产进行盘点和核对是指()。A、定期清查 B、局部清查 C、
最新回复
(
0
)