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习题练习:Evolution & Extinction



 作者: Amoureux发布日期: 2025-06-12 14:58   总分: 10分  得分: _____________

答题人: 匿名未登录  开始时间: 06月12日 14:58  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  State how many mass extinction events there have been on Earth, including the c ig: l jg ic7w0s/o:dvg(k)l+ )ccssk1urrent mass extinction caused byg gvcoc0l diw:ik()jl/g:sck+1s)s 7 humans.

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Define evolution.

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  State which factor has n0eupm ,j:01(ko)d mk s3.(upl lextpx ot caused a mass extinction in the past.

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure: A peppered moth camos1hpz5 4a:- /trpv *l cotrhi8uflaged on a tree


As pollution levels rise, the trees that the peppered moth (Biston betularia) lives on will become darker. Deduce the effect this will have on the peppered moth population numbers.

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  List three factors that could describe a spg(bv ho(p el+47vhat6r2ba -zecies' niche.

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure: Tuskless female elephants in Gor3l* c)j swve4ism-z v7ongosa


Both male and female African elephants (Loxodonta africana) are usually born with tusks. It has been observed that in Gorongosa National Park, Mozambique, some female elephants are born without tusks.

Suggest how natural selection explains the trend shown in the graph.

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a population of finches, the frequency of finches with large :twag n3f). sko1cal* beaks has increased relative to the frequency of finches with small beaks. Suggest a possible caua*cfg3 . n ao:tw1l)ksse for this.

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine which is not an e.zl :0bc9x x.jusolwm3h0*l pxample of natural selection.

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure: A broad leaf in a tropical rrr7o3 om:upk3tqg/.m ainforest


Broad-leaved plants are often found near the ground in tropical rainforests. Identify the characteristic of the leaf that is an example of a useful adaptation.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suggest three environmental changes that may lead to the isoz,.ea, w9ta c 0pu -/ppylc5lplation of populations of a specp,w.90pazl/t ce-pp5c,a y luies and thus to speciation

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