首页
登录
职称英语
[originaltext] We all scream for water when thirsty. But do you know that in
[originaltext] We all scream for water when thirsty. But do you know that in
游客
2024-05-14
20
管理
问题
We all scream for water when thirsty. But do you know that in very hot dry weather, plants also make faint sounds as if they am 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 ten thousand times more quiet than a whisper.
Robert knows that healthy well-watered plants are quiet. He also knows that many insects prefer a 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 m kill. To test his theory, Robert is using a device that can imitate plant cries. He attaches it to a quiet healthy plant so that the plant sounds thirsty. Then he watches the insects to see ff they attack more often than usual. If he is fight, scientists could use the insects’ ability against them. They could build traps that imitate crying plants, so that when the insects buzz in to eat, they won’ t buzz out.
选项
A、They could drive the insects away.
B、They could keep the plants well-watered.
C、They could make the plants grow faster.
D、They could build devices to trap insects.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3597830.html
相关试题推荐
[originaltext]Whatarethezebrastripesonthetomatosoupcansandpotato
[originaltext]Theclassiccaseinmedicalhistoryofatyphoidcarrierist
[originaltext]M:Mathdepartment,ProfessorWebsterspeaking.W:Hello,Prof.W
[originaltext]M:Mathdepartment,ProfessorWebsterspeaking.W:Hello,Prof.W
[originaltext]M:Joanandherfriendwenttoanewrestaurantlastnightandsa
[originaltext]M:Joanandherfriendwenttoanewrestaurantlastnightandsa
[originaltext]M:Joanandherfriendwenttoanewrestaurantlastnightandsa
[originaltext]M:Joanandherfriendwenttoanewrestaurantlastnightandsa
[originaltext]HowdoAmericanhusbandsfeelabouthavingworkingwives?Ma
[originaltext]HowdoAmericanhusbandsfeelabouthavingworkingwives?Ma
随机试题
StressStresscanbedefinedasanada
Architectsanddesignershaveutilized3Dprintingtechnologyaspartofthe
Accordingtoasurvey,whichwasbasedontheresponsesofover188,000stud
Howdidtheearlypeopledotheircounting?Atfirst,theydidalltheircou
等截面直杆受力P作用发生轴向拉伸变形。已知横截面面积为A,则横截面上的正应力力和
何首乌药材横切面可见的“云锦花纹”存在的部位是A:木栓层中间B:皮部C:木质
老陈计划在60岁退休的时候储备一笔资金,以确保自己一直到85岁时每个月初都能拿到
患者,男性,69岁。患慢性肺源性心脏病,近几天神志恍惚,四肢及皮肤温暖潮湿,烦躁
在期初余额录入完毕后,如果试算平衡提示有误,则不能完成以下哪些操作()。A、填制
女性,30岁,停经41天,1小时前突发右下腹撕裂样疼痛,伴心慌及里急后重感。查体
最新回复
(
0
)