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习题练习:SL/HL Topic D4.1 Natural selection



 作者: admin发布日期: 2025-02-01 14:17   总分: 14分  得分: _____________

答题人: 匿名未登录  开始时间: 25年02月01日 01:25  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) (组内1/4) 切至整卷模式 搜藏此题  
第 1 题组 (共 4 题 4 分)
  1. What is meant by the term “adaptafxeu zt 1)zsq nf+(5c7tion”?

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2#
 
单选题 ( 1.0 分) (组内2/4) 切至整卷模式 搜藏此题  
  2. Why does sexual reproduction increase thekt 3n2dx *f06k :dtlws rate of evolution in comparison to as: tdt*23 xfk0n6kld wsexual reproduction?

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3#
 
单选题 ( 1.0 分) (组内3/4) 切至整卷模式 搜藏此题  
  3. Which of the following k/w 6cv,x,l/: x;s3busveg suare factors involved in natural selection?
I. Intraspecific competition.
II. Environmental changes.
III. Overproduction of offspring.
IV. Selective breeding.

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4#
 
单选题 ( 1.0 分) (组内4/4) 切至整卷模式 搜藏此题  
  4. Which points describe aspects of how sexual selectijb h3b0 ga;ic8ie m,i(on can drive evolution in (, mbagh e;jii3c ib08a population?
I. Differences in behaviour can be used as a sign of overall fitness.
II. Differences in physical traits can affect success in attracting a mate.
III. Sexual reproduction requires the fusion of haploid gametes.
IV. Different sexes choose different ecological niches to live in.

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5#
 
问答题 ( 1.0 分) (组内1/2) 切至整卷模式 搜藏此题  
第 2 题组 (共 2 题 2 分) 当前第1/2题
题组内容描述:
5. The guppy (Poecilia reticulata) is a small tropical fish. They are predated upon by various larger fish species.The males (top in picture) have great variation in the number and colour of spots on their body, ranging from one small spot to several spots and a grey colour to a variety of bright colours (pigment polymorphism). Males with brighter colours have greater breeding success
John Endler observed wild guppy populations and conducted several investigations on guppy populations in rivers with high levels and low levels of predation.In one investigation, he moved grey coloured males from a stream with high rates of predation to a stream with less predation.
a. Suggest why males from an j2 b5w*rnz deww .y+2barea of high predation would have dull grey colouratizd b+yew*n wwr2j5.b 2on.
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6#
 
问答题 ( 1.0 分) (组内2/2) 切至整卷模式 搜藏此题  
第 2 题组 (共 2 题 2 分) 当前第2/2题
题组内容描述:
5. The guppy (Poecilia reticulata) is a small tropical fish. They are predated upon by various larger fish species.The males (top in picture) have great variation in the number and colour of spots on their body, ranging from one small spot to several spots and a grey colour to a variety of bright colours (pigment polymorphism). Males with brighter colours have greater breeding success
John Endler observed wild guppy populations and conducted several investigations on guppy populations in rivers with high levels and low levels of predation.In one investigation, he moved grey coloured males from a stream with high rates of predation to a stream with less predation.
b. After 15 generations in the hbws e* d;qk:6+6k dww3eld;l low-predation steam the offspring of this populath e dwq dl;d3kw;lbs+*w6e6:k ion of grey guppies showed much more pigment polymorphism.
Explain how this result demonstrates evolutionary change.
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7#
 
问答题 ( 1.0 分) (组内1/5) 切至整卷模式 搜藏此题  
第 3 题组 (共 5 题 5 分) 当前第1/5题
题组内容描述:
6. Explain how the following factors contribute to natural selection within a population.
I. Interspecific competic i op,mn-4ggl86,ppl93ry yqtion.
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8#
 
问答题 ( 1.0 分) (组内2/5) 切至整卷模式 搜藏此题  
第 3 题组 (共 5 题 5 分) 当前第2/5题
题组内容描述:
6. Explain how the following factors contribute to natural selection within a population.
II. Density independomh*lbf8jw: :h . e2iyg6ra f(ent abiotic factors.
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9#
 
问答题 ( 1.0 分) (组内3/5) 切至整卷模式 搜藏此题  
第 3 题组 (共 5 题 5 分) 当前第3/5题
题组内容描述:
6. Explain how the following factors contribute to natural selection within a population.
III. Mutation.
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10#
 
问答题 ( 1.0 分) (组内4/5) 切至整卷模式 搜藏此题  
第 3 题组 (共 5 题 5 分) 当前第4/5题
题组内容描述:
6. Explain how the following factors contribute to natural selection within a population.
IV. Sexual selection.j:);ru2o9v70g awzgwf6 rv r-wytrd9
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11#
 
问答题 ( 1.0 分) (组内5/5) 切至整卷模式 搜藏此题  
第 3 题组 (共 5 题 5 分) 当前第5/5题
题组内容描述:
6. Explain how the following factors contribute to natural selection within a population.
V. Overproduction of offspring.z pc6pvaq(. w0 igoc.*vwaf;1
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12#
 
问答题 ( 1.0 分) (组内1/2) 切至整卷模式 搜藏此题  
第 4 题组 (共 2 题 2 分) 当前第1/2题
题组内容描述:
7. Phenylketonuria, PKU, is a metabolic disorder caused by a recessive allele which produces a non-functioning enzyme causing a build-up of the amino acid phenylalanine.In Finland, 1 in 200,000 babies are born with the disorder.
a. Calculate the allele frequency of Pf+fx/ .zd9n3ks.v srs.b xgt r,6. xxgKU in the population of Finland.
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13#
 
问答题 ( 1.0 分) (组内2/2) 切至整卷模式 搜藏此题  
第 4 题组 (共 2 题 2 分) 当前第2/2题
题组内容描述:
7. Phenylketonuria, PKU, is a metabolic disorder caused by a recessive allele which produces a non-functioning enzyme causing a build-up of the amino acid phenylalanine.In Finland, 1 in 200,000 babies are born with the disorder.
b. Calculate the proportion of the Finnish population who are heterozygous for 1 s)a;si p(qme0ws w/z*n jb;fthe gene (i.e. carriers of the P)zib*waqwsm 1;;sepj / sfn (0KU gene).
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14#
 
问答题 ( 1.0 分) (组内1/1) 切至整卷模式 搜藏此题  
第 5 题组 (共 1 题 1 分)
8. Explain how artificial selection causes change+s ;ofz3)f,kilz xbk2 f16emes in allele frequency within a p+l o,f bm; )zk3s xffe12ekzi6opulation over several generations
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