首页
登录
职称英语
Scientists have known for some time that certain plants, called hyperaccumu-
Scientists have known for some time that certain plants, called hyperaccumu-
游客
2024-01-03
63
管理
问题
Scientists have known for some time that certain plants, called hyperaccumu-lators, can concentrate minerals at levels a hundredfold or greater than normal. A survey of known hyperaccumulators identified that 75 percent of them amassed nickel; cobalt, copper, zinc, manganese, lead, and cadmium are other minerals of choice. Hyperaccumulators run the entire range of the plant world. They may be
herbs
,
shrubs
, or
trees
. Many members of the mustard family, spurge family, legume family, and grass family are top hyperaccumulators. Many are found in tropical and subtropical areas of the world, where accumulation of high concentrations of metals may
afford
some protection against plant-eating insects and microbial pathogens. [br] Why does the author mention "
herbs
," "
shrubs
," and "
trees
"?
选项
A、To provide examples of plant types that cannot tolerate high levels of harmful minerals
B、To show why so many plants are hyperaccumulators
C、To help explain why hyperaccumulators can be found in so many different places
D、To emphasize that hyperaccumulators occur in a wide range of plant types
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3330232.html
相关试题推荐
WhatisChloeconcernedabout?[originaltext]YouwillheartwopeoplecalledChl
Choosethecorrectletter,A,B,orC.[br]Jessiehasbeencalledinforameet
ENDANGEREDSPECIESAlthoughwecannotdoanythingabouttheplantsandanimalst
ENDANGEREDSPECIESAlthoughwecannotdoanythingabouttheplantsandanimalst
ENDANGEREDSPECIESAlthoughwecannotdoanythingabouttheplantsandanimalst
ENDANGEREDSPECIESAlthoughwecannotdoanythingabouttheplantsandanimalst
SavingthejuniperplantBackgroundJuniperwasoneofthefirstplantstocolon
SavingthejuniperplantBackgroundJuniperwasoneofthefirstplantstocolon
SavingthejuniperplantBackgroundJuniperwasoneofthefirstplantstocolon
SavingthejuniperplantBackgroundJuniperwasoneofthefirstplantstocolon
随机试题
[originaltext]CannesFilmFestival,themostprestigiousmotion-picturefe
Angerisanemotionthatcanbedifficulttodealwith.Sometimesit’sexper
Inthecenterofabigcitythereareusuallydozensoflargeofficebuildin
Takingthenation-stateasourpointofspatialreference,wecan
FrankLloydWrightisbestknownasarevolutionaryAmericanarchitect.Aha
利用功角特性曲线既可以判断单机无穷大系统的暂态稳定性也可以判断多机系统的暂态稳定
用多余现金购买三个月期债券,表现为现金净流出。( )
“发展适宜性原则”是针对幼儿教育界普遍出现的( )倾向提出来的。A.幼儿教育多
2014年8月21日,中国证监会颁布的( ),明确中国证券投资基金业协会对股权
检识樟柳碱的专属性反应为A.碘化铋钾反应B.Vitali反应C.雷氏盐沉淀反应D
最新回复
(
0
)