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 leafqx;yaof,e 1r pl)14ck 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 match the main functtlwp 4k+6mes 1gy s03uions of the tissues found in a 1ws0e +ul 3pt ks4g6mytransverse 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 following ar)f--npzt , ksme adaptations of the spongy mesophyll for the intake of carbon dioxide to photk)mt f-z n,s-posynthetic 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 dependent variables in this j zxo*g0rov tt 8o*)hcd 6v2x: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 variable in this investigationp ,bek-u toped715u.n. Explain why the light intp-u,e p5b.ud 7tk ne1oensity 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 discard:bf ab jx6ur85ed from the calculation of the mean rate of wat:abfxu 8br5j6er uptake for each condition.

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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 uptake between experiment 1 andn-oj; lft n/1u 3.fl -n1 ;tunjo/

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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 betba7il+up3n 8rween 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 stoma gkpmag *4il(:ch*aw l/bdps5 n(p .p1ta in the lower epidermis of one leaf of the stem used in the investigation and a micrometer. Both iml d.1gb(ip 4panl (*aws:kpp5 *mgc/hages 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 sectior)opznh 3(2 u kco;eq+n of a dicotyledonous leaf to explain why transpiration is an inevitable conseqkn+ ;ohp2q)u(r ze co3uence 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 envin+ eer/ 1b+khironment Explain three adaptations of the lung that make the process of gaseonr++k1ib/e heus 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 affinitk 6e0(acye6dn y of haemoglobin for oxygen when it moves into rapidly respiring tin( 0ae 6cey6dkssues.

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