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
53
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
Sadly,Americansofeveryethnicitystilldemandideological______amongtheirow
TheIndustrialRevolution[A]TheIndustrialRevolutionisthenamegivento
Accordingtothepassage,[br][originaltext]Unconsciously,weallkeepac
与强、平衡、不灵活的高级神经活动类型相对应的气质类型是()。A.胆汁质 B.多
如果概念B所表达的对象均在概念A所表达的范围之内;概念A所表达的对象有些在概念B
房屋的出售价格超出合同中标明的价格的部分,应归( )所有。A.国家 B.委托
Thechangeinthatvillagewasmiraculou
不断提高我国开放型经济水平,就要做到( ) A.逐步形成全方位、多层次、宽领
A.氯霉素 B.多西环素 C.土霉素 D.四环素 E.米诺环素能引起骨、
(2015年真题)某光源发光效率达200lm/W,是电光源中光效最高的一种光源,
最新回复
(
0
)