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 followi f:baz3)pr,r0zj. mt)vefhr ( ng 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 correctly match the main functionsr6jqa96 w cp cge:7s1m of the tissues found in a pa6qe 7j gc19 rs:mcw6transverse 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 followintwk *tak.+iy2g are adaptations of the spongy mesophyll for the intake of carbon dikkai tw.yt+2*oxide 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#

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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 depende ljjn 5/eipieumlot :2 pw-g-y2 :cahm0d/31znt variables in this investigation.
Dependent variable ………………………………………….
Independent variables ………………………………………

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5#

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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 investigation. Ex6.hbfg ; h2 t zod u w(gyqca:e.csvb/h(37n9iplain why the light intensity should be control7;9v 2.caq.c: biwe uh( 6/sg bhthzy(odf3 gnled.

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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 discarded from the ipp (zsh )5))wj,pryo calculati5)sh,o) jwzyp) i rp(pon of the mean rate of water uptake for each condition.

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7#

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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 inc/y+ 8 /s eukplmk z20e-np9vyfrease in water uptake between experiment 1 and 3./py umy+f/s z- nlvpke 92k0e8

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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

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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.

(e) Explain the increase a* w33w/w,zcoi p1lslin water uptake 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 stowkwntwvcl: 3x9* *1tumata in the lower epidermis of one leaf of the stem used in the investigation and a micrometer. Both images are taken using the same magnification of x2001uk3:twnxwtl vc**w 9 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 dicotyledonous leaf to ex(,;h6 dkzqn3gfbirv(,gy pw7plain why transpiration is an inevitable consequence of gaseous exn(bq f;6ghp 3v, (z r7g,kwyidchange 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 exchan7 :0ra 6rf9 yo/o adh2y;youfkge of gases with the environment Explain three adaptations of the lung that make the process of gaseous u karfr: hoya0fy6o do/y7 29;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 haemh y*jk0.a6,n qhct(t -eg+hqp2wxdg+ oglobin for oxygen when it moves into rapidly respiring tissues6.tkhyeag *(w2hqp0tg- q +nhdjc ,+x.

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