首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Hydrothermal vents along the mid-ocean ridges host ephemeral ecosystems of diverse fauna, including several crustacean spe
Hydrothermal vents along the mid-ocean ridges host ephemeral ecosystems of diverse fauna, including several crustacean spe
admin
2011-01-17
35
问题
Hydrothermal vents along the mid-ocean ridges host ephemeral ecosystems
of diverse fauna, including several crustacean species, some of which undergo
development as larvae up to 1,000 meters above and 100 kilometers away from
Line the vents. For example, vent crab Bythograea thermydron (at stage of
(5) larvae) possess image-forming compound eyes with a visual pigment sensitive to
the blue light of upper oceanic waters. As these larvae metamorphose into
adulthood and begin to descend to and settle at the vents, they lose their image-
forming optics and develop high-sensitivity naked-retina eyes. With maturation,
the spectral absorbance of the visual pigment in these eyes also shifts towards
(10) longer wavelengths and this progressive visual metamorphosis trades imaging
for increased sensitivity, and changes spectral sensitivity to the dim, longer
wavelengths of light existing at the bottom of the ocean. As hydrothermal vents
produce light, vision may supplement thermal and chemical senses to orient
post-larval settlement at vent sites.
Which of the following is the most appropriate title for the passage?
选项
A、Adaptive Visual Metamorphosis in Deep-Sea Vent Crabs
B、Aspects of the General Anatomical Development of Deep-Sea Vent Crabs
C、New Research Directions in the Study of Deep-Sea Vent Crabs
D、Common Features of Optics of Lower Depth Oceanic Animals
E、Patterns of Anatomical Transformation in Lower Oceanic Creatures
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/Z6jO777K
本试题收录于:
GRE VERBAL题库GRE分类
0
GRE VERBAL
GRE
相关试题推荐
ResearchersinBritainaretellingschoolsthatchildrenshouldbedoingmorelearningoutdoors.Theresearcherssaythereiscu
______theintroduction,theprofessorexplainedthemajorconceptthatwouldbecoveredintheclass.
Beforethegrasshasthickenedontheroadsidesandleaveshavestartedgrowingonthetreesisaperfecttimetolookaroundan
Increasingly,overthepasttenyears,people—especiallyyoungpeople—havebecomeawareoftheneedtochangetheireatinghabit
Woman:DoyougetthePublicBroadcastingSystemonTV?Man:Yes,everybodygetsPBS.【D5】______Woman:It’sboringandof
Ahouseisthemostexpensivethingmostpeoplewilleverbuy.Veryfewpeoplehaveenoughmoneyoftheirowntobuyahome,so
Whatisthearea,insquareinches,ofacirclewithadiameterequalto12inches?
AFAMILY’SEXPENDITURESANDSAVINGSASAPERCENTOFITSGROSSANNUALINCOME**2003Grossannualincome:$50,0002004Grossann
Question(1)and(2)arebasedonthefollowingdata.(1)Forwhichyeardidtotalexpendituresincreasethemostfromtheyear
PLACATE:
随机试题
下列表述中错误的是()。
发生霍乱时,对疫区接触者的检疫期是
女,28岁,孕28周,胎方位为枕左前位,听取胎心音的部位应在
压力管道年度检查是指使用单位在管道运行条件下进行的检查。根据《压力管道定期检验规则一工业管道》(TSGD7005),压力管道年度检查的内容有()。
监理实施细则中应当明确安全生产监理的方法、措施和控制要点,以及()。
以下表述中,属于经济批量基本模式假设的有()。
某企业上年销售收入为1000万元,若预计下一年通货膨胀率为5%,公司销量下降2%,所确定的外部融资占销售增长的百分比为25%,则相应外部应追加的资金为()万元。
中国是一个多民族国家,各民族在中华民族大家庭中,要像石榴籽那样紧紧抱在一起,同心共筑中国梦。这要求()。①尊重民族差异,包容文化多样②建立平等团结互助和谐的新型民族关系③民族自治地方享有高度自治权④各民族守望相助、共同发展
=_______.
Almosteveryfamilybuysatleastonecopyofanewspapereveryday.Somepeoplesubscribe(订阅)toasmanyastwoorthreenewspa
最新回复
(
0
)