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
56
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
A--PropertyLawB--IntellectualPropertyLaw
EatingOurYoung[A]AtFeltonvilleSchoolofArtsa
建筑施工企业应对危险性较大的施工作业场所及具有尘毒危害的作业环境设置()。A.安
()通常被认为是最为理想的退出方式之—?A.清算退出 B.上市转让退出 C
白噪声过程满足的条件有()。 Ⅰ.均值为0 Ⅱ.方差不变的常数 Ⅲ.异
根据下列资料,回答下列问题。 据报道,2013年3月英国政府宣布,从10月份起
为防止肾上腺素氧化变质和消旋化,药典规定肾上腺素注射液的pH为A.2.5~5.5
国际收支平衡是指国际收支差额处于一个相对合理的范围内,既( )。A.无巨额的国
不正当的竞争行为包括A.以折扣销售保健食品,如实入账 B.低价销售积压的化妆品
关于环境保护税应税污染物计税依据的确定方法,正确的是()。A.应税大气污染物按
最新回复
(
0
)