首页
登录
职称英语
Hydrothermal vents along the mid-ocean ridges host ephemeral ecosystems
Hydrothermal vents along the mid-ocean ridges host ephemeral ecosystems
游客
2024-01-12
17
管理
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
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.
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://tihaiku.com/zcyy/3354714.html
相关试题推荐
Hydrothermalventsalongthemid-oceanridgeshostephemeralecosystems
Hydrothermalventsalongthemid-oceanridgeshostephemeralecosyst
Hydrothermalventsalongthemid-oceanridgeshostephemeralecosyst
EPHEMERAL:ENDURE::A、hollow:inundateB、immanent:transcendC、pointed:prick
Althoughplantandanimalspeciesthatbecomeestablishedinecosystemswhereth
By(i)______manyaspectsofnaturalriverecosystems,somedamscauseseriousha
Aninfluentialearlyviewheldthatecosystemscontainnichesforalimitednumb
Aninfluentialearlyviewheldthatecosystemscontainnichesforalimitednumb
Thereare,asyet,novegetationtypesorecosystemswhosestudyhasbeen(i)___
Ourterrestrialfoodsupplycomesfromecosystemstransformedtoproduceaf
随机试题
Withtheeffectsofglobalization,increasesintechnologyandthepaceof
幼儿记忆发展中最重要的质的飞跃是( )。A.无意识记的发展 B.有意识记的发
患者女,52岁。因饮食量增加但体重减轻,多次检查空腹血糖均≥8.5mmol/L,
干式变压器温度突升至120℃时,应立即停运。
、错误下达调度命令、错误安排运行方式、错误下达继电保护及安全自动装置定值或
关于质量计划和质量策划的说法,正确的是()。 A.质量策划是质量计划的结果之
2006年中国入境旅游、出境旅游和国内旅游均快速增长,旅游产业规模日渐庞大,已成
某商业银行发放的下列贷款,哪些应计人不良贷款? A.甲公司的一笔流动资金贷款
对于45岁以上的年龄组来说,只要VIQ/PIQ之间的差异为12IQ,就达到(
设备简单、使用灵活,对铸铁及有色金属的焊接有较好的适应性,生产率较低,焊接后工件
最新回复
(
0
)