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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 transformations that occur in/rizhw)*8gro g e.*bb na1,rf 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 fro(cw x8aw*l6po0 w)y po(*hu8tls)dulm a secondary consumer to a saprotroph and lost f8la (tsdwo(wx)y w 0 *ou)6p8*hlupclrom the food chain ?
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 stage in thedy: a(va vi*ijkhi:b8k:9 w (t food chain from producer to aa:h(j 9(vyii:8d b: twkiv*kprimary 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 oxqs/ yiqn41+c/:sm + hydu9f pn the diagram that corresponds to the word inpy n:+uhs s+1qy9x/dqcfmi4 / the 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 z2gai.m 7c f5bcause of an increase in atmospheric cma7.cib gzf 52arbon 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 j f*l;ly i84lqqx 12c)l:kg s7uog7t6scq:m b 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 energygqi xws7; jut5n6lnli o e ,7:pml737k in the producers that is availablpn k6q;ui3 lw, s ltenog7 7:jm5x7il7e in the 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 has onlyg/*paiju,ngblpv3z c0+1 7 je 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 isy a/okhq1qg5+bw x l.c t3k(8j 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 enerse);kmvf q7 h*gy source such as light.
参考答案:    

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