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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 energyc 86t5pufj-i1d3uu;;1puyc ivev 8nk transformations 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.

参考答案:    

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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 s)r 9u-b2.wk5zije-we rin 0fa aprotroph and lost from the food ch0w-n.2r z)j a 5ie-9ikebwr fuain ?
I. As heat energy
II. As energy in excreted materials.
III. From undigested matter as egested materials.
IV. By respiration.

参考答案:    

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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 the st h0ux,;tuot.page in the food chain from producer to primary consumer0xp tthuu .;,o?
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 onmz7luri yy- vyz/53d d 8k94kp the diagram that corresponds to the word in the tyz9- 4dmiz yp/v dl7ukky538rable.

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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 in a7vrm avb5/gcide(0 , ztmospheric carbon dioxidi d/ve0vgacmrz (75b,e?
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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 carbon sourcesfzfcoy 0n) a6bbdla 09qn)l:ozvwhm4 98 a 5a4 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 chemical energy in tizs-.2 :ojc8 csq pi+wa k3w0rhe producers that is available in thzio28w i s0jkpsa cr.3qc+-:w e secondary 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 food3w n x8z/vjn7w:nn,zg chain has only four levels.
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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 available at each trophic lrm9j x-: t6qedtvzt/) evel 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 autotroqiyey;pymnt,xa(3 6i/y q2/w phs need to have an external energy source such as light.
参考答案:    

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