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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: 25年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 thz * v;08mreeb71sctl sere have been on Earth, including the current mass extinction cae 1*b l0msrt ;s7czve8used by 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 not caused a mass extinction in the dtch s*9 odg.7,2 ejpipast.

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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 cam. qhk r9wr8fttxp;0eu7 9f ni*ouflaged 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 descryfyvt0;my3 g/j kw93eibe a species' 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 el(xz)9:rt zjlyj;:tbzao jt 49zj4 n3 pephants in Gorongosa


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 bea im2*uy*yg9.j l7 f1rww * d1yaw+2*iyrnwtw dks has increased relative to the frequency o2iuy m y* 1tdydwyw921w.w*fwina* lj+g *r r7f finches with small beaks. Suggest a possible cause 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 example of natural sy0qm(b-0me bxrhnj((j, n 1g xelection.

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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 tropicx c1mc3u1r*6m 6 hiivwal rainforest


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 changebp5u+f)mwu/ygb jc8+ 9wn to,s that may lead to the isolation of populations of a species and thus to specit+8b,+p umw n5fgyu9j )wcbo /ation

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