首页
登录
职称英语
What do plants do when they are thirsty? [originaltext] We all scream for wa
What do plants do when they are thirsty? [originaltext] We all scream for wa
游客
2023-11-19
40
管理
问题
What do plants do when they are thirsty?
We all scream for water when thirsty. But do you know in very hot, dry weather plants also make faint sounds — as if they’re crying out for help?
You see, in a plant’s stem there’re hundreds of "water pipes" that bring water and minerals from the soil all the way up to the leaves. As the ground turns dry, it becomes harder and harder for the plants to do this.
In severe droughts, plants have to fight to pull out any water available. Scientist Robert Winter has found out that when it is really bad their water pipes snap from the tension like rubber bands. When that happens, the whole plant vibrates a little. The snapping pipes make noises 10,000 times quieter than a whisper.
Robert knows that healthy, well-watered plants are quiet. He also knows that many insects prefer attacking dry plants rather than healthy plants. How do the insects know which are healthy plants and which are not? Robert thinks that the insects may listen for the plants that cry. And then they may buzz in to kill.
To test his theory, Robert is using a device that can imitate plant cries. He attaches it to a quiet, healthy plant so the plant sounds thirsty. Then he watches insects to see if they attack more often than usual.
If he is right, scientists could use the insects’ ability against them. They could build traps that imitate crying plants. So when the insects buzz in to eat, they won’t buzz out.
选项
A、They give out faint cries.
B、They make noises to drive away insects.
C、They extend their water pipes.
D、They become elastic like rubber bands.
答案
A
解析
题目问的是当植物缺水时它们会做什么。由原文提到的... in very hot, dry weather plants also make faint sounds...可知答案为A 。
转载请注明原文地址:https://tihaiku.com/zcyy/3199973.html
相关试题推荐
NigeriawillreturntotheCommonwealthafter______.[originaltext]Commonwea
Whatisthespeaker?[br][originaltext]Goodmorning.Aspartofyourorien
Whatisthespeaker?[br][originaltext]Goodmorning.Aspartofyourorien
Whatdoesthewomando?[br][originaltext]M:Christine,you’renotonlyaneigh
Whatisanextendedfamilyaccordingtothewoman?[br][originaltext]M.Annie,
Whatisthemaintopicofthisnews?[br][originaltext]Thegovernorsof4
Whatisthemaintopicofthisnews?[br][originaltext]Thegovernorsof4
Whatdoesthispassagemainlydiscuss?[br][originaltext]Thosewhohads
Whatdoesthispassagemainlydiscuss?[br][originaltext]Thosewhohads
Whatdoesthispassagemainlydiscuss?[br][originaltext]Thosewhohads
随机试题
TheSenatebillaimsto_______withinthenextsevenyears.[br][originaltext]
ThecapitalofBosnia-Herzegovina,Sarajevo’spopulationontheeveoftheFirst
Economistshavelongrecognizedwhat’sbeennamedthe"beautypremium"—the
地下室外墙施工时,如有螺栓穿过防水混凝土结构,应选用( )。A.钢质止水环
K县H公司为金属易拉罐生产企业,共有员工350人。主要生产工艺包括:剪切、缝焊、
粒料类继承顶面弯沉代表值现场测定中,测得的弯沉平均值为24mm,标准差3.2,保
某专题设有“广告语的是是非非”“电视公益广告的语言特征”“广告语言的性质和规范要
沪港通和深港通的基本规则包括()。 ①订单设计 ②订单修改 ③T+2交收
对乙酰氨基酚的结构式是A.B.C.D.E.
广义的劳动力市场是指劳动力所有者个体与使用劳动要素的企业之间,在劳动交换过程中所
最新回复
(
0
)