在线试听和英语短文Plants in the Deserts Some cacti, like the saguaro, grow to tree size, but true trees need more moisture than most desert environments can supply, so they are scarce on deserts. Cl
Plants in the Deserts Some cacti, like the saguaro, grow to tree size, but true trees need more moisture than most desert environments can supply, so they are scarce on deserts. Close to streambeds, cottonwoods can sometimes be found. Though these streams are dry most of the year, water...
Plants in the Deserts Some cacti, like the saguaro, grow to tree size, but true trees need more moisture than most desert environments can supply, so they are scarce on deserts. Close to streambeds, cottonwoods can sometimes be found. Though these streams are dry most of the year, water...
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In addition to a few varieties of trees and tough shrubs, most deserts have grasses, herbs, and other annual plants. These do not compete for moisture with the longer lived growth. They spring up quickly after rains, when the surface is moist. Then,...
2. There are fewer (few) plants in the deserts than in the mountains, because there is little water. 相关知识点: 试题来源: 解析 答案见上2. fewer【解析】句意:比起山里,沙漠里的植物___ ,因为沙漠里几乎没有水。根据“than”可知,此处要 用few的比较级形式。故填fewer。
More plants of the Deserts Prickly Pear Cactus There has been medical interest in the prickly pear plant. Some studies have shown that the pectin contained in the prickly pear pulp lowers levels of "bad" cholesterol while leaving "good" cholesterol levels unchanged. Another study found that the...
Plants in deserts usually have ___ roots to absorb water. A. long B. short C. thick D. thin 相关知识点: 试题来源: 解析 A。本题考查植物在沙漠环境中的适应性。沙漠中缺水,植物通常会长出长根来吸收水分,A 选项“long”表示长的,符合沙漠植物的特点。B 选项“short”短的根不利于吸收水分;C 选...
Adaptations of Desert Organisms: Plants in the Deserts of The Middle East, K.H. Batanouny, 2001, Springer-Verlag. ISBN-3-540-52572-6, Hardcover DM 209,00, US$ 105.00doi:10.1016/S0168-9452(01)00498-8Dorothea BartelsInstitute of Botony, University of Bonn, D-53115 Bonn, Germany...
and aridity by using both physical and behavioral mechanisms, much like desert animals. The ingenuity and variety of these many adaptations are explored inDesert Plant Survivaland theDesert Food Chain.Below are links to the flora found in the deserts, with photos and information about each plant...