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习题练习：SL/HL Topic B 3.1 Gas exchange
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 作者: admin  发布日期: 2025-01-27 10:23    总分: 12分  得分: _____________

答题人: 匿名未登录  开始时间: 25年01月27日 10:23  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 apply to gaseous exchange in a leaf and in thevo.hv7* v6 rrhe,( zvn lung?
I. Oxygen moves down its concentration gradient.
II. Gases move by active transport.
III. Gases dissolve before entering the cells.
IV. Oxygen and carbon dioxide diffuse in opposite directions.

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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. Which of the following rows correctly match the main functions ofv x2dki+ffd2 6 the tissues found in a transverse secxd2fi6k f2 dv+tion of a leaf?


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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 are adaptations of the spongy mesophyll for the ip3jqhltk zv+ +(hfg 71ntake of carbon dioxide t 3lkzjpq+7 ht1gvh(+fo photosynthetic leaf cells?
I. A water layer on the cell surface.
II. Air spaces between the mesophyll cells.
III. The presence of stomata.
IV. A large surface area.

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4#
 
问答题 ( 1.0 分) (组内1/7) 切至整卷模式 搜藏此题  
第 2 题组 (共 7 题 7 分) 当前第1/7题 
题组内容描述:
4. A potometer is used to measure water uptake by a cut shoot of a plant. The data shows the mean rate of water uptake by cut shoots of the same plant for 10 minutes. Four environmental conditions were tested, with 6 repeats at each. The first measurement was discarded and the mean of the following 5 measurements was recorded in the table. The temperature, light intensity and humidity were monitored 10 times during each measurement of water uptake and their mean values recorded in the table.
(a) List the independent and depeq6r- ji(pw c ij v:,uh 00l+kemq3qvr1ndent variables in this investigation.
Dependent variable ………………………………………….
Independent variables ………………………………………
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5#
 
问答题 ( 1.0 分) (组内2/7) 切至整卷模式 搜藏此题  
第 2 题组 (共 7 题 7 分) 当前第2/7题 
题组内容描述:
4. A potometer is used to measure water uptake by a cut shoot of a plant. The data shows the mean rate of water uptake by cut shoots of the same plant for 10 minutes. Four environmental conditions were tested, with 6 repeats at each. The first measurement was discarded and the mean of the following 5 measurements was recorded in the table. The temperature, light intensity and humidity were monitored 10 times during each measurement of water uptake and their mean values recorded in the table.
(b) Light intensity was a controlled variable in this investigation. Exfg: yu 1bwpld*to bzm24hyg2*3c. f1dplain why the light intensityd :* .ou2hfmytz2w g g b1b*1cyd4fpl3 should be controlled.
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6#
 
问答题 ( 1.0 分) (组内3/7) 切至整卷模式 搜藏此题  
第 2 题组 (共 7 题 7 分) 当前第3/7题 
题组内容描述:
4. A potometer is used to measure water uptake by a cut shoot of a plant. The data shows the mean rate of water uptake by cut shoots of the same plant for 10 minutes. Four environmental conditions were tested, with 6 repeats at each. The first measurement was discarded and the mean of the following 5 measurements was recorded in the table. The temperature, light intensity and humidity were monitored 10 times during each measurement of water uptake and their mean values recorded in the table.
(c) Suggest why the fi1;osybla6+(e l3 zbaa (q.zw. vb )smirst measurement in each condition was discarded from the calculation of the mean rate of water uptake for each conditionl oaeayz.sl)w(+(6a3.iz bbvqbm;s 1.
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7#
 
问答题 ( 1.0 分) (组内4/7) 切至整卷模式 搜藏此题  
第 2 题组 (共 7 题 7 分) 当前第4/7题 
题组内容描述:
4. A potometer is used to measure water uptake by a cut shoot of a plant. The data shows the mean rate of water uptake by cut shoots of the same plant for 10 minutes. Four environmental conditions were tested, with 6 repeats at each. The first measurement was discarded and the mean of the following 5 measurements was recorded in the table. The temperature, light intensity and humidity were monitored 10 times during each measurement of water uptake and their mean values recorded in the table.
(d) Calculate the percentage increaszu0 aorf; bp u+ik26m7;tw8lbe in water uptake between experiment 1 and 3.ozblawm;tb;i86 7uk pfu+02 r
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8#
 
问答题 ( 1.0 分) (组内5/7) 切至整卷模式 搜藏此题  
第 2 题组 (共 7 题 7 分) 当前第5/7题 
题组内容描述:
4. A potometer is used to measure water uptake by a cut shoot of a plant. The data shows the mean rate of water uptake by cut shoots of the same plant for 10 minutes. Four environmental conditions were tested, with 6 repeats at each. The first measurement was discarded and the mean of the following 5 measurements was recorded in the table. The temperature, light intensity and humidity were monitored 10 times during each measurement of water uptake and their mean values recorded in the table.
(e) Explain the increase in water uptak/5u y*3vmaii re between trials 2 and 3.
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9#
 
问答题 ( 1.0 分) (组内6/7) 切至整卷模式 搜藏此题  
第 2 题组 (共 7 题 7 分) 当前第6/7题 
题组内容描述:
4. A potometer is used to measure water uptake by a cut shoot of a plant. The data shows the mean rate of water uptake by cut shoots of the same plant for 10 minutes. Four environmental conditions were tested, with 6 repeats at each. The first measurement was discarded and the mean of the following 5 measurements was recorded in the table. The temperature, light intensity and humidity were monitored 10 times during each measurement of water uptake and their mean values recorded in the table.
(f)The image shows the stomata in the lower epidermis of one leaf of tdcf (p3nizwv1 olo:zv8+tj i-+7/sne ; tt) dvhe stem used in the investigation and a micrometer. Both images are taken using the saso;7dp:o n8n d+zj)vltfe v 1ct3ii w+z-vt/(me magnification of x200 in a light microscope
Explain how you could use the photographs of the micrometer and of the stomata to estimate thestomatal density of the leaf.
(one stomata is labelled A in the photograph)
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10#
 
问答题 ( 1.0 分) (组内7/7) 切至整卷模式 搜藏此题  
第 2 题组 (共 7 题 7 分) 当前第7/7题 
题组内容描述:
4. A potometer is used to measure water uptake by a cut shoot of a plant. The data shows the mean rate of water uptake by cut shoots of the same plant for 10 minutes. Four environmental conditions were tested, with 6 repeats at each. The first measurement was discarded and the mean of the following 5 measurements was recorded in the table. The temperature, light intensity and humidity were monitored 10 times during each measurement of water uptake and their mean values recorded in the table.
(g) Use the image of a transverse s) .dz kku)xb6gection of a dicotyledonous leaf to explain why tr) x6kdk. bgz)uanspiration is an inevitable consequence of gaseous exchange in a leaf.
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11#
 
问答题 ( 1.0 分) (组内1/2) 切至整卷模式 搜藏此题  
第 3 题组 (共 2 题 2 分)
5. The lung is involved in the exchan.yh2ze(ko3l hp.u l0t c. sam.ge of gases with the environment Explain three adkh2t..yscml .zp(a 3u0el oh.aptations of the lung that make the process of gaseous exchange efficient.
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12#
 
问答题 ( 1.0 分) (组内2/2) 切至整卷模式 搜藏此题  
6. Discuss the changes in affinity of haemoglobin for oxygen when op 60gm8 .ayxfit moves into ra.x 8ogp6af 0mypidly respiring tissues.
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