首页
登录
职称英语
The occurrence of dense aggregations of the fruit-bearing tree Brosimum alic
The occurrence of dense aggregations of the fruit-bearing tree Brosimum alic
游客
2025-02-19
8
管理
问题
The occurrence of dense aggregations of the fruit-bearing tree Brosimum alicastrum on or near Maya ruin complexes in Central America was initially interpreted as evidence of ancient Maya silviculture, i.e., the stands were relics of orchards planted by the Maya. Later work, however, suggested that the stands resulted from the Artibeus bats that roost among the ruins. The bats fly to the forest, collect the fruit, bring it back to their roost, eat the fruit, and then discard the undamaged seed.
The continual input of bat-dispersed seed
has maintained the clumps of B. alicastrum around ruins for many hundreds of years.
This observation, however, does not negate the possibility that B. alicastrum was used and managed by the Maya. In fact, if we examine the behavior, rather than the density or location, of these tree populations, we are presented with strong evidence of deliberate genetic improvement. This is especially notable in the B. alicastrum trees that cluster around the Maya ruins at Tikal in Guatemala: these trees’ productivity is almost twice that of trees in Veracruz, Mexico, under almost identical environmental conditions. [br] “The continual input of bat-dispersed seed” is mentioned in the passage as part of an explanation for
选项
A、the productivity of certain stands of B. alicastrum
B、the presence of stands of B. alicastrum in certain locations
C、the displacement of fruit trees from Maya orchards
D、changes in the appearance of Maya ruins
E、changes in the forest around Maya ruins
答案
B
解析
蝙蝠播撒种子这一信息就是作者给出的关于面包树分布范围的一种解释,故选项B正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3963943.html
相关试题推荐
Theoccurrenceofdenseaggregationsofthefruit-bearingtreeBrosimumalic
Theoccurrenceofdenseaggregationsofthefruit-bearingtreeBrosimumalic
Theoccurrenceofdenseaggregationsofthefruit-bearingtreeBrosimumalic
随机试题
AccordingtoBloomfield,thesentencestructureisA、onlylinear.B、onlyhierarch
能使学生产生良好的自我预言效应的最佳期望水平是()A.高水平期望 B.适当低
D
某地区城镇人口增长的幅度比乡村人口增长的幅度多几个百分点?A.5.5百分
证券公司融资融券业务的风险包括()。 A.客户信用风险B.市场风险 C.
把下面的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是
“桃李不言,下自成蹊”这句话所体现的德育方法是()》 A.说服教育法B.锻炼
案例七: 一般资料:求助者,女性,42岁,中学教师。 案例介绍:求助者由于
在进行财务生存能力分析时,若某年份的净现金流量出现负值,且各年累计盈余资金并没有
在建设工程项目进度计划系统中,按计划的深度不同划分的进度计划包括( )。A.总进
最新回复
(
0
)