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习题练习:SL Topic C4.2 Transfers of energy and matter

 作者: admin   总分: 10分  得分: _____________

答题人: 游客未登录  开始时间: 25年02月01日 00:51  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) (组内1/3) 切至整卷模式 搜藏此题  
第 1 题组 (共 3 题 3 分)
  1. Which of the following are energy transa *wyt blb;/w gwdjj93wms 16/formations that occur in a food web?
I. Light to chemical energy in photoautotrophs.
II. Chemical energy to heat energy in first order consumers.
III. Heat energy to chemical energy in saprotrophs.
IV. Chemical energy to mechanical energy in apex predators.

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2#
 
单选题 ( 1.0 分) (组内2/3) 切至整卷模式 搜藏此题  
  2. How can energy be transferred from a secondary consumer to a saprotroph ani :j64*jefg (jh/vtfkd lost from fh vfi4 ej/*6jk:g(jt the food chain ?
I. As heat energy
II. As energy in excreted materials.
III. From undigested matter as egested materials.
IV. By respiration.

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3#
 
单选题 ( 1.0 分) (组内3/3) 切至整卷模式 搜藏此题  
  3. Which of the following decrease at)+ei7vdh 6 fqg;y8jko the stage in the food chain from producer to primary consumer? d8gjhfeqo ;yv6)+i 7k
I. Population.
II. Biomass.
III. Chemical energy.
IV. Heat energy

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4#
 
问答题 ( 1.0 分) (组内1/3) 切至整卷模式 搜藏此题  
第 2 题组 (共 3 题 3 分) 当前第1/3题
题组内容描述:
4. The diagram shows the carbon cycle with some words replaced by numbers. Use the diagram to answer the questions below.
a. In the table below write the number on the diagram that corresponds tj1z:*h3u:afags,dts-sv/ y yo the word in theat:sgyh: syza/1j*-s3 vud,f table.

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5#
 
问答题 ( 1.0 分) (组内2/3) 切至整卷模式 搜藏此题  
第 2 题组 (共 3 题 3 分) 当前第2/3题
题组内容描述:
4. The diagram shows the carbon cycle with some words replaced by numbers. Use the diagram to answer the questions below.
b. Which process on the diagram is an anthropogenic cause of an increase t kk2a20ql1ulin atmospheric210tql 2akklu carbon dioxide?
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6#
 
问答题 ( 1.0 分) (组内3/3) 切至整卷模式 搜藏此题  
第 2 题组 (共 3 题 3 分) 当前第3/3题
题组内容描述:
4. The diagram shows the carbon cycle with some words replaced by numbers. Use the diagram to answer the questions below.
c. Outline why carbonn wc.nc:s1l3rvmc om*a 6i )-r sources and sinks need to be balanced in the ecosystem.
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7#
 
问答题 ( 1.0 分) (组内1/3) 切至整卷模式 搜藏此题  
第 3 题组 (共 3 题 3 分)
题组内容描述:
5. The table represents the flow of chemical energy in a freshwater ecosystem.
a. Calculate the percentage of the chem pdpmc 096hi - fvoa8bp)zn2bn2nn(k+kt8 cv,ical energy in the producers that is available in the second0pcc k8v nnifmav8p o-b()922btk d6,+ p nznhary consumers.
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8#
 
问答题 ( 1.0 分) (组内2/3) 切至整卷模式 搜藏此题  
b. Outline why the food chain has only four ny;txo7/j0 g*qk- bo blevels.
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9#
 
问答题 ( 1.0 分) (组内3/3) 切至整卷模式 搜藏此题  
c. Explain why the energy av0 c ik :txag/w-qw)qr0ailable at each trophic level is measured in$KJM^{-2}yr^{-1}$
.
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10#
 
问答题 ( 1.0 分) (组内1/1) 切至整卷模式 搜藏此题  
第 4 题组 (共 1 题 1 分)
6. Explain why autotrophs need to have anxvl ok+px25n8nh/;jg; x fh.y external energy source such as light.
参考答案:    

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