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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 ener 5yh7hx,/ wf:wgj-)zaf is3bkgy 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 le a:tj/0,vd1mut rs8jmz n-( consumer to a saprotroph and lost from the food chaitd -jjzm , reu(nv08tlsma/ 1:n ?
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 decreasrn;g;vk vhw +:;juj6s2yan d93xux m (e at the stage in the food chain from producer gjx: 2;km9u(h awnx u;v;n 3jd+v6rs yto primary consumer?
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 to the wfs2( r mvb0gmand,4e2 ord in the table. ,grn2m2f 4sbe v a(md0

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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 incr2)ut: d6clh wyease in atmosp)t ycw:u2 dh6lheric 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 carbon sources and sinks need to be balan x6kfsfi6eo56 ced 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 percc 9k vab6mnly fwo(2,0entage of the chemical energy in the producers that is available in the secony0l(nf ,ob kc29vwma6dary 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 levelsku6tq4p kq; ( s;p8oxp.
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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 trophq8cb.. ro xwg+sf rx/w/)d/s;rpf- jsic 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 nee y(u 2:u +msegwfaf3zpi59l8ld to have an external energy source such as light.
参考答案:    

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