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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: 游客未登录  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 eventsv k.z ,c ahs10qrkbk-8 there have been on Earth, including the current mass extinction cau. c-khs8 rbqz,v0k1aksed 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 no q /rr91idqew;t 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 camouflads b1las ,8ownyu5p;2 ged 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 descri(tljs+ vh5g u*k u(yzky9/qm:be 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 mbg */ dpo3s0zelephants 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 bld(7x+rg58rznqw0qfinches with large beaks has increased relative to the frequency of finches with smr+ zd0rgq5 n8 b(lqxw7all 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 no(+qu zl-srh; atural 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 leafh ;4rj0c bwt0q in a tropical 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 changes that may lead to the isolation of populvi ,qtn, 9vx *q 7wfv4(sfqr3nations of a species and thr (q q9f n7x3qnv*v,4ti vfw,sus to speciation

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总分:10分 及格:6分 时间:不限时
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