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 following apply to gaseous exchange in a leaf and in- 6*y2,s r 8rwfnvbbu(c(9xvco zj. rt 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 correctly match the main functions of the tissuestmpmiugjk,+3 h vlc0 x4 -h-1s found in a transverse section of-mhjm0v3g-kti pu,xsh4 cl1+ a leaf?

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 ad,gj 1w6ylt9cg /qw8pd aptations of the spongy mesophyll for the intake of carbon dioxide to photosyn ,/wcg6l ypd89wqt1j gthetic 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#

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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 dep;jm i9j.vs/ xxj 45zgnendent 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 variablegl3h8 shg91df1 l1su -jr ci3a in this investigation. Explain why the light intensity shoursl9dh3a3 81hsglj1f 1ig -ucld 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 first measurement in each condition was discarded fp 4bbjb i/,+tplgq36 ,tuk(tnrom the calculation of the mean rate of water uptake for each cl3, pb 4t/jubqnp tktg6+(b,i ondition.

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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 increase in water uptakynt,c0y2* s8mt0u nxme between experiment 1 and 3, unmt0ycmxty82n *s0 .

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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 uptat-2 csek hkuk 3hi+8bw409/tdhsl )cake 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 fkw3pz0k0j)-vd hcn4k76 w ljin the lower epidermis of one leaf of the stem used in the investigation and a mi 7dkpjkl0wwfj)z kcv 43h0-n6crometer. 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 a dicotyl l dln-zgl3q)7edonous leaf to explain why transpiration is an inevitable consequence of gaseousl37)-zlnqg l d 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 environment Ex ctsh0* 8f*pcjplain three adaptations of the lung that make the process of gaseous exchaft ch*sj0 *8cpnge 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 p k+r4pcv-i74gy,/qqe c ua/yhaemoglobin for oxygen when it moves into rapidly 4ugp7/c q rkqe/yi p,y+vc-4a respiring tissues.

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