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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: 匿名未登录  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 transformations that occur in a fx(i.mdf 8 bu:pm./in mood 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 seconm55o9j9 ) ounfbvmsd ,dary consumer to a saprotroph and lost from the food chains5 nmm,jv9)o fbd95ou ?
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 the stage in the food chain from produc/ t: :evpv -vthw;z8zser to primary cons;-8/v:t:tepzwvv z h sumer?
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 nu39z1q 6 lf2 d svpc/2tgseb+blmber on the diagram that corresponds to the word in the ta d/ves21bqlz6s+3c2 b fp9 gtlble.

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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 increas zuq13** uvqff3yj5jse in atmospheric carbon diox1uyv3f q uj*zq3*5sj fide?
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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 carbonu ouzdv5;c sb8 8o.-o ;+twylr 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 chzy .qn2zb+p w)inf 17femical energy in the producers that is available in tb)fn+ iw.7znf2q z1yphe 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 food chain)z -jpe8q m-tz5lh* y8pzm(iq 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 level is d5sm8 /vq3; -oq t qnj/jhkqx+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 an external energy source such as ligh9nk v ahh qq.u,k:u,r1t.
参考答案:    

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