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
2023-09-03
49
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、Quiet plants.
B、Well-watered plants
C、Healthy plants.
D、Thirsty plants.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2981563.html
相关试题推荐
【B1】[br]【B8】[originaltext]I’minterestedinthecriminaljusticesystemo
【B1】[br]【B4】[originaltext]I’minterestedinthecriminaljusticesystemo
【B1】[br]【B2】[originaltext]I’minterestedinthecriminaljusticesystemo
[originaltext]Helloeverybody,andWelcomebacktothethrillinggameatth
[originaltext]Helloeverybody,andWelcomebacktothethrillinggameatth
[originaltext]Helloeverybody,andWelcomebacktothethrillinggameatth
[originaltext]Helloeverybody,andWelcomebacktothethrillinggameatth
[originaltext]M:IwillbecomingstraightfromworksoI’dbetterbringanothe
[originaltext]M:IwillbecomingstraightfromworksoI’dbetterbringanothe
[originaltext]M:IwillbecomingstraightfromworksoI’dbetterbringanothe
随机试题
Thegoals______hehadfoughtallhislifenolongerseemedimportanttohim.A、
以下哪些辅助检查结果显示与胎儿生长发育受限不符A.B型超声常提示羊水过少 B.
A.全厚皮片 B.刃厚皮片 C.超薄皮片 D.中厚皮片 E.带真皮下血管
一般在妊娠几周后发现臀位可采用膝胸卧位纠正A.20周后 B.24周后 C.2
增值税属于中央固定收入的部分外,税额的()分别划归中央政府和地方政府。 A.2
A.甘露醇 B.依他尼酸 C.氢氯噻嗪 D.盐酸甲氯芬酯 E.呋塞米临床
A. B. C. D.
下列财产中可以抵押的是( )A.建设用地使用权 B.土地使用权 C.耕地、
根据《房屋建筑与装饰工程工程量计算规范》(GB50854-2013),不计算建筑
下列选项中,属于材料消耗净用量的确定方法()。A.理论计算法、测定法、图纸计算法
最新回复
(
0
)