首页
登录
职称英语
Mineral deficiencies can often be detected by specific symptoms such as chlo
Mineral deficiencies can often be detected by specific symptoms such as chlo
游客
2024-01-03
7
管理
问题
Mineral deficiencies can often be detected by specific symptoms such as chlorosis(loss of chlorophyll resulting in yellow or white leaf tissue), necrosis(isolated dead patches), anthocyanin formation(development of deep red pigmentation of leaves or stem), stunted growth, and development of woody tissue in an herbaceous plant. Soils are most commonly deficient in nitrogen and phosphorus. Nitrogen-deficient plants
exhibit
many of the symptoms just described. Leaves develop chlorosis; stems are short and slender; and anthocyanin discoloration occurs on stems, petioles, and lower leaf surfaces. Phosphorus-deficient plants are often stunted, with leaves turning a characteristic dark green, often with the accumulation of anthocyanin. Typically, older leaves are affected first as the phosphorus is mobilized to young growing tissue. Iron deficiency is characterized by chlorosis between veins in young leaves. [br] According to paragraph 2, a symptom of iron deficiency is the presence in young leaves of
选项
A、deep red discoloration between the veins
B、white or yellow tissue between the veins
C、dead spots between the veins
D、characteristic dark green veins
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3330228.html
相关试题推荐
Because(oftheneed)tomaintainthecorrectbalanceofsalts(and)mineralsin
NarratorColumbiaUniversityhasspecificregulationsfortherespectofrel
InfluenzaandVaccinesThereisnospecificcureforin
InfluenzaandVaccinesThereisnospecificcureforin
InfluenzaandVaccinesThereisnospecificcureforin
InfluenzaandVaccinesThereisnospecificcureforin
InfluenzaandVaccinesThereisnospecificcureforin
InfluenzaandVaccinesThereisnospecificcureforin
InfluenzaandVaccinesThereisnospecificcureforin
InfluenzaandVaccinesThereisnospecificcureforin
随机试题
【B1】[br]【B19】A、onB、ofC、atD、inDhavedifficultyindoingsth.为常用搭配,意思是“做某事有困
Thegovernmentistobanpaymentstowitnessesbynewspapersseekingtobuy
[originaltext]W:(5)Agoodresumepredictshowyoumightperforminthatdesire
Bookshavealwaysbeenthemaintoolsforteach.Butavastnumberofnew
个人汽车贷款的借款人需要为贷款所购车辆购买指定险种的车辆保险,并在保险单中明确第
关于风湿热的舞蹈病,下列哪项不符A.女童多见 B.四肢不自主运动 C.入睡后
患儿,男,4岁,体重13kg,身高87cm,生后不久即出现青紫,每于行走或活动时
甲企业共生产18种产品,其产品组合为3种洗涤剂、4种香皂、5种至今和6种洗发水,
涎腺多形性腺瘤A.鳞状化生 B.角化珠 C.胶样小体 D.角质栓塞 E.
招标人以不合理的条件限制或者排斥潜在投标人的,可以处()万元罚款。A.1~5
最新回复
(
0
)