首页
登录
职称英语
Traffic fumes render the scent of flowers barely recognizable to honeybees an
Traffic fumes render the scent of flowers barely recognizable to honeybees an
游客
2023-06-29
11
管理
问题
Traffic fumes render the scent of flowers barely recognizable to honeybees and could have a serious impact on their ability to find food, new research has found. Scientists discovered that reactive pollutants in diesel (柴油) destroyed key chemicals in the odour of oilseed flowers making them smell different to the bees.
"Honeybees have a sensitive sense of smell and an exceptional ability to learn and memorize new odours," said Tracey Newman, a neuroscientist at the University of Southampton. "The effect of diesel fumes on flower scent could have serious detrimental effects on the number of honeybee colonies and pollination (授粉) activity." Three-quarters of the world’s food crops rely on bees and other natural pollinators " Pollinator services are crucial to humankind," said Newman.
But there have been serious declines in natural pollinators in recent decades. A combination of factors is blamed, including the huge loss of the flower-rich habitats that sustain bees, as well as disease, and the impact of agricultural insecticides. The revelation that traffic fumes could be adding to the problems is significant, said Guy Poppy, a professor and ecologist at Southampton, who also worked on the research. He said, "Diesel exhaust is not the root of the problem, but clearly, with all the other stressors, adding another one is likely to be detrimental to bee health."
The study, published in the journal Scientific Reports, tested bees’ ability in the laboratory to recognize the aroma of oilseed rape flowers. Bees were strapped down and taught to associate floral scents with food in the form of sugar solutions. Once the bees learned the connection they began sticking their tongues out in anticipation of food even if it was not offered—an indication that they recognized the smell. When the scent was presented without pollutants the bees recognized it 98% —99% of the time. But after the scent was mixed with levels of diesel exhaust matching those found at roadsides, the bees only recognized it 30% of the time. [br] What is the influence of reactive pollutants in diesel?
选项
A、Destroys oilseed flowers.
B、Changes scent of flowers.
C、Pollutes the air.
D、Damage honeybees’ capability to smell.
答案
B
解析
根据文章第一段第二句Scientists discovered that reactive pollutants in diesel destroyed key chemicals in the odour of oilseed flowers making them smell different to the bees可知,“柴油的活性污染物破坏了油菜花气味中关键的化学物质,让蜜蜂闻到的是不同的气味”。因此可以选出B选项,柴油的活性污染物改变了油菜花的香味。A选项“破坏了油菜花”的信息不够细化。C选项“污染了空气”并未在文章中描述。D选项“损害了蜜蜂的嗅觉”是断章取义,也不对。
转载请注明原文地址:https://tihaiku.com/zcyy/2792501.html
相关试题推荐
[originaltext]Roadtrafficcrasheskill1.25millionpeopleeachyearworld
[originaltext]Roadtrafficcrasheskill1.25millionpeopleeachyearworld
Itisallverywelltoblametrafficjams,thecostofpetrolandthequick
Itisallverywelltoblametrafficjams,thecostofpetrolandthequick
Itisallverywelltoblametrafficjams,thecostofpetrolandthequick
WhenwetalkaboutAmericansbarelyintoadulthoodwhoaresaddledwithunbe
WhyYouShouldn’tFreakOutAboutSwarmingHoneybees—andHowtoSaveBeesFr
WhyYouShouldn’tFreakOutAboutSwarmingHoneybees—andHowtoSaveBeesFr
WhyYouShouldn’tFreakOutAboutSwarmingHoneybees—andHowtoSaveBeesFr
WhyYouShouldn’tFreakOutAboutSwarmingHoneybees—andHowtoSaveBeesFr
随机试题
Thepresidentwhohaswontheelection______ontelevisionnextweek.A、betospea
EarlysettlersoftheAmericanSouthwestgrewtorealizethattheappearance
马克思指出:“意识在任何时候都只能是被意识到了的存在,而人们的存在就是他们的现实
下列关于安全边际率与评价企业经营安全程度的一般性标准的说法中,正确的有()。A.
关于L-dopa下述哪一项是错的A.对抗精神病药物引起的帕金森症无效 B.
Almosteveryoneatthemeetinghasdiffe
下列建设用地中属于合法用地的情形是( )。A.未取得城市规划行政主管部门核发的
下列哪种材料不能用作桥体的龈端A.陶瓷 B.合金 C.复合树脂 D.热凝塑
甲公司为上市公司,该公司内部审计部门在对其2×19年度财务报表进行内审时,对以下
对于设计方案比较特殊,无同类工程可比,且审查精度要求高的施工图预算,适宜采用的审
最新回复
(
0
)