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 gase )o erg75s zbbnm96i2 .dun(ptous 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 correctly m6 wpf*-zk 6raoatch the main functions of the tissues found in rfk w*aoz6p -6a transverse section of 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 followinap ufsnf/ 6.p:g are adaptations of the spongy mesophyll for the intake of carbon / p:fpn.sf6 uadioxide 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 do(v eieowf *:9ependent 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 variablybv/rjema( 7-1 .mbb ge in this investigation. Explain why the light intensity should be congy7/1bmrbejvma.-( btrolled.

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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 measurylq6xi m9dchu t g54xsqj8(3m);kka2ement in each condition was discarded from the calculation of the mean rate of water uptake for each conditi9ad;q5j8)(ihkylus64q g xmc3xt k2m on.

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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 incbv,+tbe g m,1 u,alsp/rease in water uptake between experiment 1 and 3ls1b ,b ,eu/ +tvamp,g.

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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 between trials 2 r)cs aln)t6wt 4b5hr4s z io;: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 oey+xw:x qi y3jitq xb.1y5 *i8f the stem used in the investigation and a micrometer. Both images are taken using the same magnification of x200 in a ligy y: qbi.3ixwtyx*81e+ixq5jht 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 tk 4jyfr5ho:ye h -s3p,ransverse section of a dicotyledonous leaf to explain why transpiration is an inevitable consequence of gaseous hp5k,h-3 fsyjy4e o:rexchange 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 the1p.;sp*r lrr9 b (q5d7kkb jzz environment Explain three adaptations ob*zqdp.rblzrprk sk197;j(5 f 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+5q:(vuww3v9w kv t qnx,ro f3 oxygen when it moves into rapi:q w+tfr33vv9ox w(wqu5k n,vdly respiring tissues.

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