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Since the Hawaiian Islands have never been connected to other land masses, the great variety of plants in Hawaii must be a result of the long-distance dispersal of seeds, a process that requires both a method of transport and an equivalence between the ecology of the source area and that of the recipient area. There is some dispute about the method of transport involved. Some biologists argue that ocean and air currents are responsible for the transport of plant seeds to Hawaii. Yet the results of flotation experiments and the low temperature of air currents cast doubt on these hypotheses. More probable is bird transport, either externally, by accidental attachment of the seeds to feathers, or internally, by the swallowing of fruit and subsequent excretion of the seeds. While it is likely that fewer varieties of plant seeds have reached Hawaii externally than internally, more varieties are known to be adapted to external than to internal transport.
【題組】48. It can be inferred from information in the passage that the existence in alpine regions of Hawaii of a plant species that also grows in the southwestern United States would justify which of the following conclusions?
(A) There are ocean currents that flow from the southwestern United States to Hawaii.
(B) The plant species discovered in Hawaii must have traveled from the 第 9 頁，共 9 頁 southwestern United States only very recently.
(C) The plant species discovered in Hawaii reached there by attaching to the feathers of birds migrating from the southwestern United States.
(D) The ecology of the southwestern United States is similar in important respects to the ecology of alpine regions of Hawaii.

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1F
jessica_kuan 小六下 (2016/05/12)

開宗明義第一句a process that requires both a method of transport and an equivalence between the ecology of the source area and that of the recipient area

除了要有傳播媒介,還要兩地生態相同.
2F
阿哲 大四上 (2016/05/22)
【題組】48。它可以從信息中的一段話來推斷，一種植物的夏威夷高山地區的存在也生長在美國西南部將證明它得出如下結論？
（A）關聯有從美國西南部流向夏威夷洋流。
（B）在夏威夷發現的植物物種一定是從美國西南部只有極最近前往。
（C）在夏威夷發現的植物種類由連接到鳥類是從美國西南部遷移的羽毛達到那裡。
（四）美國西南部的生態環境是在一些重要方面夏威夷的高山地區的生態環境相似。
3F
(⁎⁍̴̛ᴗ⁍̴̛⁎) 大二上 (2024/03/16)
本文章單字
 
英文 中文
dispersal N, 傳佈、分散
equivalence  N, 等值
subsequent A. 隨之的，後來的
excretion  N, 排泄、分泌
resolve  v.解決、消除


Since the Hawaiian Islands have never be..-阿摩線上測驗