首页
登录
职称英语
Lichens may grow on the bark of a tree in a steaming tropical rain forest, o
Lichens may grow on the bark of a tree in a steaming tropical rain forest, o
游客
2023-12-27
45
管理
问题
Lichens may grow on the bark of a tree in a steaming tropical rain forest, on the bricks of big city buildings, on rocks in hot springs, on wind-swept mountaintops, and in the driest desserts. In the arctic, they provide the principal food for caribou, and they are one of the few plants that grow in Antarctica. They are pioneers, appearing in barren rocky areas and starting the formation of soil in which mosses, then ferns, and then other plants can take root.
Lichens are a partnership of two plants — fungi and algae. The lichen body is made up of a network of fungal strands. In the upper layers of these grow groups of algae. The two organisms live together to the benefit of both, a relationship known as symbiosis. The fungi provide support, absorb water, and shelter the tender algae from direct sunlight. The algae carry on photosynthesis and provide the fungi with food. The algae can live independently and are recognizable as a species that grows alone. The fungi, on the other hand, cannot live apart from their partners. They can be placed in known classes of fungi but are unlike any species that lives independently.
So definite are the form, color, and characteristics of these double organisms that for hundreds of years, they were classified as one. More than 15,000 "species" were named. If these organisms are classified as separate species, it is difficult to fit them into the existing system of classification. But if they are classified separately, these species of fungi seem rather strange. Lichens are a splendid example of the difficulties faced by taxonomists in classifying species. [br] Lichens may NOT grow ______ .
选项
A、in the tropical woods
B、on the ceilings of city buildings
C、on rocks in hot springs
D、in dry desserts
答案
B
解析
细节题型见第一段第一句,可知选项A、C、D都被提及,所以B为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3311118.html
相关试题推荐
Whenisanordinarytropicalstormcalledahurricane?[br][originaltext]I
Whenisanordinarytropicalstormcalledahurricane?[originaltext]Inthe
WheninAustraliarecently,Ivisitedaeucalyptusforestthatwasoncethe
如有必要,调查组将给予现场办公更好的保护,林业部野生动物及森林保护司副司长说。VicedirectoroftheMinistryofForestry
EarlyMaoriadaptedthetropicallybasedeastPolynesiancultureinlinewith
Lichensmaygrowonthebarkofatreeinasteamingtropicalrainforest,o
Lichensmaygrowonthebarkofatreeinasteamingtropicalrainforest,o
Lichensmaygrowonthebarkofatreeinasteamingtropicalrainforest,o
Lichensmaygrowonthebarkofatreeinasteamingtropicalrainforest,o
Lichensmaygrowonthebarkofatreeinasteamingtropicalrainforest,o
随机试题
Lookatthechartsbelow.Theyshowthesalesofcarsindifferentdepartmentst
[originaltext]W:I’mreallylookingforwardtothistripwithourgeologyclass
Hollywoodhasamessageforscientists:Ifyouwantsomethingthat’s100%ac
男性,60岁,体重50kg,以往无心血管病史,走路不慎,滑人刚溶的石灰水中,两下
关于价值型股票的特征,说法错误的是()。A.收益稳定 B.安全性高 C.市
以下哪项不是银杏叶的药理作用A.改善学习记忆 B.降低血脂 C.抗早孕 D
在影响港口通过能力的因素中,运输工具的性能、尺度和作业因素的内容包括( )。A
为全部消除地基液化沉陷,采取下列哪些选项的措施符合《建筑抗震设计规范》(GB5
在处理思想、政治、经济三者关系时,必须依据( ) A.它们的相互联系和相互作
一般业务服务层的核心是()。A.电子支付 B.CA认证 C.客户服务 D
最新回复
(
0
)