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
2023-08-06
58
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/2901737.html
相关试题推荐
[originaltext]Thereisacommonopinionthatifyoustudyhardandgraduate
[originaltext]Engaginginregularexerciseimprovesyouroverallhealth,mobili
[originaltext]Engaginginregularexerciseimprovesyouroverallhealth,mobili
[originaltext]Today,wewillfocusonsolotravelling.Whileit’sfuntotravel
[originaltext]Today,wewillfocusonsolotravelling.Whileit’sfuntotravel
[originaltext]Somepeoplechoosetotightlygraspthepastandstaystuckinth
[originaltext]Somepeoplechoosetotightlygraspthepastandstaystuckinth
[originaltext]Somepeoplechoosetotightlygraspthepastandstaystuckinth
[originaltext]Withexams,quizzes,essays,projects,andmyriaddeadlinesfo
[originaltext]Withexams,quizzes,essays,projects,andmyriaddeadlinesfo
随机试题
()破产法()民法[br]()万国公法
Howdowegetmorepeopletoincreasetheirconsumptionofiron-richfoods?
Fancyathree-dayweekend—notjustonceinawhilebutweekinweekout?You
Youshouldspendabout20minutesonQuestions27-40,whicharebasedonReading
Thediversityoftropicalplantsintheregionrepresentsaseeminglyinexhausti
[originaltext]M:Hi,Molly!Whatareyoudoinghere?W:Hi,Jack.Theusualthi
沙门菌在选择培养基SS琼脂上其菌落呈现出无色或A.浅蓝色B.微黄色C.深红色D.
地理信息工程需求分析的主要内容包括()。A.系统现状调查 B.系统目标和任务确
1.背景 国内某新建非枢纽机场初步设计已获得批复,因业主方建设管理力量不足,拟
行政机关作出的下列决定中,当事人可以申请行政复议的有()。A.施工单位因偷工减
最新回复
(
0
)