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
67
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
Completethetablebelow.WriteNOMORETHANTHREEWORDSAND/ORANUMBERforeac
Forthispart,youareallowed30minutestowriteashortessayonthetopicDu
符合鲜货原料储藏要求的是( )。A.所有易腐败变质食品的冷藏温度要保持在0℃以
利用应急广播系统、警铃、室内电话等设施设备以及通过喊话等方式发布火警信息。
对以下曲目描述正确的是()A.《走西口》流行于陕西、内蒙、青海一带 B.
男性,36岁,饱餐后突发上腹刀割样剧痛,后迅速蔓延全腹,恶心呕吐,体检"板状腹"
中医认为多发性抽动症的病位主要在A、心 B、肺 C、脾 D、肝 E、肾
行政许可直接涉及申请人与他人之间重大利益关系的,行政机关在作出行政许可决定前,应
甲见乙挥拳打丙,遂上前制止,结果被乙误伤。对甲因此所遭受的损害A.由乙、丙承担按
期货从业人员在进行投资分析或者提出投资建议时应当()。A.勤勉尽责、独立客观
最新回复
(
0
)