首页
登录
职称英语
[originaltext] We all scream for water when thirsty. But do you know in very
[originaltext] We all scream for water when thirsty. But do you know in very
游客
2024-03-09
35
管理
问题
We all scream for water when thirsty. But do you know in very hot. dry weather, plants also make faint sounds- as if they are crying out for help? You see, in a plant’s stem, there are 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 more quiet 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 this 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 the 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.
9. What do plants do when they are thirsty?
10. What plants do many insects tend to attack?
11. What could scientists do if Robert’s theory proves to be true?
选项
A、They extend their water pipes.
B、They give out faint cries.
C、They make noises to drive away insects.
D、They become elastic like rubber bands.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3517997.html
相关试题推荐
[originaltext]Weallscreamforwaterwhenthirsty.Butdoyouknowinvery
[originaltext]W:Goodevening!Welcometoourprogram.OurguesttodayisMr.T
[originaltext]TodaywearetalkingabouteBay,oneoftheenormouslysucces
[originaltext]Thedangerfromearthquakesisveryreal—theyareprobablyth
[originaltext]W:Ithinkifyouwanttogetsomeexcitementinyourlifeyouou
[originaltext]W:EricSchurenbergisthemanagingeditorofMoneyMagazineint
[originaltext]AgrowingnumberofAmericanuniversitiesaredroppingtheen
[originaltext]Lasttimeweweretalkingabouttheneedforadvertising.Now
[originaltext]TheInternethascreatedawholenewworldofsocialcommunic
[originaltext]M:Whatdidyousayyouweregoingtotakeupasacareer?W:Law
随机试题
Becausenocomprehensive____existregardingpersonalreadingpractices,wedo
MyfriendJaneoncefoundaweasel(鼬鼠)whenhewasveryyoung.Asshewasfo
不需要振荡闭锁的继电器有:()A.极化量带记忆的阻抗继电器; B.工频变化量
简述学习动机的期望一价值理论。
由于一种新的电池技术装置的出现,手机在几分钟内充满电很快就会变成现实。这种新装置
卡托普利可引起干咳,是因为该药使体内堆积的物质是A.AngⅠ B.AT1 C
消费者供给劳动的目标是实现效用最大化,实现效用最大化要满足的条件是()。A
一般来说,国债的政策功能包括()。A.弥补财政赤字 B.筹集建设资金
甲公司拟自建一条生产线,与该生产线建造相关的情况如下: (1)2×20年
疾病监测可以实现A.以上均是 B.控制疾病的发生 C.了解疾病的现状 D.
最新回复
(
0
)