Talkingplantsmightsoundlikecharactersinafairytal...
问题详情:
Talking plants might sound like characters in a fairy tale.But recent scientific studies have shown that plants communicate with each other and with other living things in a surprising number of ways.To understand them, scientists say, we just have to learn their language.Farmers are especially interested in what plants have to say.
“Plants are able to communicate with all sorts of organisms(有机体).They can communicate with giant bacteria, with other plants and with insects.They do this chemically, ”said Cahill, an Ecology Professor of the University of Alberta in Canada.
Plant scientists are just beginning to understand this chemical “language”.Cahill says studies have shown, for example, that plants can evaluate conditions in their immediate environment and take appropriate actions.Plants have an ability, for example, to signal pain or discomfort caused by anything from temperature extremes to an insect attack.Jack Schultz, a professor of chemical ecology at the University of Missouri, says when a plant senses that it’S being eaten, it cannot walk away from trouble;on the contrary, it will release a chemical vapor that alerts other plants nearby.
“Their language is a chemical language, and it involves chemicals that move through the air, which are easily to be changed, and most of all are smells that we are familiar with, ” Schultz explained.
“All plants responded to the attack by changing their chemistry to defend themselves, ” Schultz recalled.“But we were quite surprised to find that nearby plants also changed their chemistry to defend themselves, even though they were not part of the experiment.”
Studies have also shown that plants under attack release pleasant chemicals.Those chemicals attract friendly insects that attack the pests eating the plant.
In the end, plants’ability to communicate their needs-and our ability to understand them-could help farmers reduce the use of poisonous chemicals, cut operating costs and limit damage to the environment.
recent scientific studies have shown that plants can __________.
A.communicate with other living things in a chemical way
B.hardly react to any sudden change in temperature
C.use a very special chemical language which is familiar to us
D.respond to the attack by giving off poisonous chemicals
being eaten by a pest, the plant will ___________.
A.walk away from trouble
B.change its chemistry to kill the insect
C.release a chemicaI vapor to “ask” other plants for help
D.give off nice chemicals to attract friendly insects to a tack the pest
underlined word “alerts” most probably means “___________”.
A.warns B.protects C.threatens D.allows
h would be the best title for the passage?
A.Communication between Plants B.A Chemical “Language”
C.Plants Can Talk D.How Plants Protect Themselves
【回答】
ADAC
知识点:科普环保类阅读
题型:阅读理解
-
下列对诗句分析不正确的一项是( )A.“关关雎鸠,在河之洲”两句运用比喻手法,说明淑女、君子在河滩幽会,营造...
问题详情:下列对诗句分析不正确的一项是()A.“关关雎鸠,在河之洲”两句运用比喻手法,说明淑女、君子在河滩幽会,营造出一种幽静的氛围。B.“参差荇菜”一句反复使用,增强了诗歌的节奏感,也展现了《诗经》回环往复、一唱三叹的特*。C.“悠哉悠哉,辗转反侧”以行动来反映君...
-
早春二月的某一天,A市的平均气温为-5℃,B市的平均气温为3℃,则当天B比A市的平均气温高
问题详情:早春二月的某一天,A市的平均气温为-5℃,B市的平均气温为3℃,则当天B比A市的平均气温高____________℃.【回答】8提示:3-(-5)=8.知识点:有理数的加减法题型:填空题...
-
读下图,回答3—4题3.水循环中A.①环节是水汽输送,中纬西风是其主要动力B.②环节是降水,主要集中在春、秋季...
问题详情:读下图,回答3—4题3.水循环中A.①环节是水汽输送,中纬西风是其主要动力B.②环节是降水,主要集中在春、秋季节C.③环节是地表径流,径流量季节和年际变化大D.④环节蒸发的水汽,大部分被输送到陆地上空4.关于图中*、乙、*、丁四处的叙述,正确的是A.*处为向斜山,主要由...
-
可吸入颗粒物(指空气动力学直径小于10微米的颗粒物,表示为PM10。PM2.5是指大气中直径小于或等于2.5微...
问题详情:可吸入颗粒物(指空气动力学直径小于10微米的颗粒物,表示为PM10。PM2.5是指大气中直径小于或等于2.5微米的颗粒物,也称为可入肺颗粒物)是*市大气的一种主要污染物,它们虽然在大气中的含量很少,但是它对环境和人体的危害都很大。回答3-4题。3.读*市2003年1月16...
相关文章
- TheGreatWallofChinaisbyfarmankind'slargestbuilding.I...
- TheGreatWallofChinaisbyfarmankind'slargestbuilding.I...
- TheGreatWallofChinaisbyfarmankind'slargestbuilding.I...
- 任务型阅读 Lindausuallygetsupinthemorning.Shehasbreakfastats...
- Makingfriendsisaskill(技巧).Likemostskills,it 41 withpati...
- TheGreatWallofChinaisbyfarmankind'slargestbuilding.I...
- TheGreatWallofChinaisbyfarmankind'slargestbuilding.I...
- PersonallyIthinktrainsareexcitingandromantic.Imust 41 ...
- “Nevertalktostrangers.”Manychildrenaretaughtthissimple...
- AtfirstIdidn’tlikeEnglish,butnowIlikeitverymuch. A.Atl...