首页
登录
职称英语
What is the focus of the passage? [br] [originaltext] Scientists have discov
What is the focus of the passage? [br] [originaltext] Scientists have discov
游客
2023-11-13
45
管理
问题
What is the focus of the passage? [br]
Scientists have discovered more details about how plants use water. Their findings could help to engineer plants that grow better and more effectively in conditions with higher levels of carbon dioxide. Plants naturally take in carbon dioxide they need for photosynthesis, the process of changing light energy to chemical energy. The carbon dioxide enters the plants through tiny holes or pores on the surface of leaves. However, each time a plant takes in one molecule of carbon dioxide gas, it loses hundreds of water molecules. Scientists say plants lose ninety-five percent of the water they take in through these pores. Some plants’ pores can tighten to save water during conditions of high carbon dioxide. Other plants are not able to do this as well. Now, scientists know how these tiny pores tighten in plants. They identify proteins that control the tightening of a plant’s pores. The proteins are enzymes called carbonic anhydrates. They believe the enzymes could be changed in some plants to increase their ability to store water. Changing plants to save more water will not affect plant growth. This method might be used to help engineer food crops that are resistant to extremely dry conditions. It could help farmers meet a growing demand for food as water supplies decrease.
选项
A、Plants can save water.
B、Photosynthesis is complex.
C、High carbon dioxide is not good to crops.
D、The new way of food engineering raises production.
答案
A
解析
细节题。科学家们的发现是植物能储存水。其他选项均未出现在文中。
转载请注明原文地址:https://tihaiku.com/zcyy/3184113.html
相关试题推荐
Howmanypeoplewerekilledinthemassacre?[br][originaltext]TheBosnian
Howmanypeoplewerekilledinthemassacre?[originaltext]TheBosnianSerb
Thewomanfoundoutabouttheuniversitystation______[br][originaltext]W:H
Anewstudyofthebrainishelpingscientistsbetterunderstandhowhumans
Anewstudyofthebrainishelpingscientistsbetterunderstandhowhumans
Anewstudyofthebrainishelpingscientistsbetterunderstandhowhumans
Anewstudyofthebrainishelpingscientistsbetterunderstandhowhumans
Anewstudyofthebrainishelpingscientistsbetterunderstandhowhumans
Anewstudyofthebrainishelpingscientistsbetterunderstandhowhumans
Anewstudyofthebrainishelpingscientistsbetterunderstandhowhumans
随机试题
Whattimeistheman’sflight?[img]2010q3/ebecflm_ebfllistv_0257_108[/img][br]
【S1】[br]【S10】character→characteristic用词不当。该句中要求使用单词表示“特点”,characteristic正是此意;而
A.洗涤液不足 B.制动液不足 C.冷却系统故障 D.冷却液不足
患者,女,38岁。反复上腹痛伴反酸10多年,近来疼痛加剧,服抗酸药等不能缓解。近
(2017年真题)对于信托(契约)型股权投资基金的而言,基金份额的转让涉及(
关于基金托管人的信息披露,以下表述正确的是()。A.在基金份额发售的3日前,将
目前最常用的检测病原体急性感染诊断IgM抗体的方法是A.双抗体夹心法B.竞争法C
宋代由()主管地方教育A.学政 B.提举学事司 C.地方官员 D.教谕
谵妄的临床表现不包括 A.定向力丧失B.对各种刺激无反应C.意识模糊D.感
知识点:肾盂肾炎 判断肾盂肾炎病人是复发还是重新感染,通常以病人首次治疗停药
最新回复
(
0
)