首页
登录
职称英语
Much of the research on nutrient deficiencies is based on growing plants hyd
Much of the research on nutrient deficiencies is based on growing plants hyd
游客
2025-02-06
21
管理
问题
Much of the research on nutrient deficiencies is based on growing plants hydro-ponically, that is, in soilless liquid nutrient solutions. This technique allows researchers to create solutions that selectively omit certain nutrients and then observe the resulting effects on the plants. Hydroponics has applications beyond basic research, since it
facilitates
the growing of greenhouse vegetables during winter. Aeroponics, a technique in which plants are
suspended
and the roots misted with a nutrient solution, is another method for growing plants without soil. [br] According to paragraph 3, what is the advantage of hydroponics for research on nutrient deficiencies in plants?
选项
A、It allows researchers to control what nutrients a plant receives.
B、It allows researchers to observe the growth of a large number of plants simultaneously.
C、It is possible to directly observe the roots of plants.
D、It is unnecessary to keep misting plants with nutrient solutions.
答案
A
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3944790.html
相关试题推荐
Scientistshaveknownforsometimethatcertainplants,calledhyperaccumu-
Scientistshaveknownforsometimethatcertainplants,calledhyperaccumu-
Muchoftheresearchonnutrientdeficienciesisbasedongrowingplantshyd
Mineraldeficienciescanoftenbedetectedbyspecificsymptomssuchaschlo
Mineraldeficienciescanoftenbedetectedbyspecificsymptomssuchaschlo
Mineraldeficienciescanoftenbedetectedbyspecificsymptomssuchaschlo
TheresearchersPeterUckoandAndreeRosenfeldidentifiedthreeprincipall
[img]2018m9s/ct_etoefz_etoeflistz_201808_0021[/img][br]Whydidtheresearchers
[img]2018m9s/ct_etoefz_etoeflistz_201808_0051[/img][br]Whydidresearcherscon
______isaquestionthatconcernstheresearcherswhohavebeenstudyingit.A、Be
随机试题
Ifyouwantchildrentoworkhardyoumust________theirinterestsinsteadofth
[originaltext]Forthreegroupsofexplorersformedbycollegestudentsand
A.continuallyB.wastedC.atthetopD.means
崩解剂的作用机理有().().润湿热和产气作用。
下列关于脑血栓急性昏迷期治疗错误的是( )。A.保持呼吸道通畅 B.不能进食
中国证券业协会和中证资本市场发展监测中心原承担的三项职责不包括()A.证
A.正胜邪退 B.邪去正虚 C.邪盛正虚 D.邪正相持 E.正虚邪恋病后
取20μl血加至7.98ml红细胞稀释液中混匀,静置后滴入计数盘,计数中央大方格
可保护胃黏膜、杀灭幽门螺杆菌的药物是()。A.枸橼酸铋钾 B.法莫替丁 C.
如图所示某柱下独立基础,基础底面尺寸3.0m×2.5m,埋深1.5m,上部结构传
最新回复
(
0
)