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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 events there have been on Earth, including the cupkz;q-caa lmdh r(j.( yx*c6; n7 p,tkrrent mass extinction caused b-azmch6qx ;rk pjkal*7n( .y(; , tcpdy 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 i enq bj we4.eya78ostpdf 6:q9va/++ ln 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 camouflaged on a treqm/1 p/9g y/wwa oja5ke


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 species' nitr4lpa z8+ uuq-ef; vv a2fiix5 9(7kxche.

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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 Gorongosazce2 idi4i p(n-5l j5y


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 wml- 626kly0pq(w8(g)mppfu/rujqtn ith large beaks has increased relative to the frequency of finches 6 w p0 ll)um/g(kjq(m6-unypf2t 8prqwith 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 select 4qp5fks s+r/hion.

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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 i66)u83kl4tbli sd3o.vof qtx n 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 environmen 9qg-q bqjoo vihu*1l 855imj7tal changes that may lead to the isolation of populations of a *i1 i85u 5lg9hojbqvj-qqmo 7species and thus to speciation

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