SL/HL Topic B 3.1 Gas exchange - 无忧得胜-网上国际课程 (5edu.win)

1#

第 1 题组 (共 3 题 3 分)

1. Which of the followsk*8ao j (3reying apply to gaseous exchange in a leaf and in the 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.

A. All of the above

B. IV only

C. I, II and III only

D. I, III and IV only

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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 corrsh/))as xf2 5soudx/ jectly match the main functions of the tissues found in a transverse section of a lea/sxh )u/5jsfo 2)xsdaf?

A. B. C. D.

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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 mes8 iljs b9cw88oophyll for the intake of carbon d c wb8joil98s8ioxide to 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.

A. All of the above

B. II and IV only

C. I, II and III only

D. I, II and IV only

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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

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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 dependent5.ubdkl2z m)t 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

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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 v wnovh1g :a1u wz0l:p/ariable in this investigation. Explain why the light in/ la::wwnz o1g01vp hutensity 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

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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 first measurement in each condition was discar*iqmffnga4e4gaa / ,,ded from the calculation of the mean rate of water uptake for each conditi,aa4m /n qgif ag*,4efon.

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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

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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 increase in water uptakuj60- pvdeue cn+ ept 1z56ph1e between experiment 1 and 3tp6jvzu6pd1e+- 5eue 0npch1 .

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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 uptake betwe4f4v0.o xbo j.kmb3d gen 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 jmk/y /5; f px(z mek/o,zjg.din the lower epidermis of one leaf of the stem used in the investigation and a5m(;jd/j/fp.y/kgmzez kx,o micrometer. Both images are taken using the same 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 section of ad 4: d2c8ezhpl5 aga*y dicotyledonous leaf to explain why transpiratzdhd 5 :elcy2paa48* gion 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 exchange of gases with the environ 7x7//7du* kcab/ .g.rbzg;anzr y2wj1kwota ment Explain three adaptations of the lung that make the process wjcgr r.aoyxua.t/g*a7k 2bk1 z;/w7nd/7z b 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 itgjgc+aa-ajgws hk31u 0b*,u/ moves into rapidly respiring g1jkj3s-/ *gahu 0a+b,a gucwtissues.

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