CN201893065U - Plant transpiration experimental demonstration instrument - Google Patents
Plant transpiration experimental demonstration instrument Download PDFInfo
- Publication number
- CN201893065U CN201893065U CN201020572606XU CN201020572606U CN201893065U CN 201893065 U CN201893065 U CN 201893065U CN 201020572606X U CN201020572606X U CN 201020572606XU CN 201020572606 U CN201020572606 U CN 201020572606U CN 201893065 U CN201893065 U CN 201893065U
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- water
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- transpiration
- demonstration instrument
- experimental demonstration
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Abstract
The utility model relates to an experimental demonstration instrument, in particular to a plant transpiration experimental demonstration instrument which comprises a glass gasket, a measuring cylinder or a measuring cup arranged on the glass gasket, a glass bell jar covering the measuring cylinder or the measuring cup, and a desiccating agent bag. When the plant transpiration is verified, the water in the measuring cylinder or the measuring cup can be intuitively found to be reduced, therefore, people know that the water needed by the plant transpiration is acquired from the measuring cylinder or the measuring cup; in addition, the water amount reduction is also easy to understand, that is, the water is absorbed by the desiccating agent bag; meanwhile, the moisture dissipated through the transpiration in the moisture absorbed by a plant can be calculated by weighting the increase of the desiccating agent bag and the loss of the water in the measuring cylinder or the measuring cup.
Description
Technical field
The utility model relates to a kind of experimental demonstration instrument, relates in particular to a kind of plant transpiration effect experimental demonstration instrument.
Background technology
The biological teaching material in junior middle school is design like this about the experiment of " scattering and disappearing of moisture--transpiration ": choose the broad leaved plant that a basin is in the growth animated period, be enclosed within on several leaves with an air tight and dry transparent plastic bag, sack is tightened.Behind plant watering, be placed under the sunlight experimental provision or warm place, after a while, just can see on the inwall of polybag that many globules are arranged, thus the transpiration of explanation plant.After lecture experiment, mention " moisture that plant absorbed nearly 99% distributes by transpiration " in the teaching material again.But top experiment does not prove this point well.So the student only is the understanding that a perception is arranged to transpiration, absorption moisture about 99% is used for transpiration understands not deeply, impression is not deep.
The utility model content
The purpose of this utility model is for solving the problems of the technologies described above, a kind of plant transpiration effect experimental demonstration instrument being provided.
Above-mentioned technical purpose of the present utility model is achieved by the following technical programs:
Plant transpiration effect experimental demonstration instrument, it comprises the glass pad, is arranged on graduated cylinder or the measuring cup on the glass pad, the drying agent bag that covers the glass bell jar of described graduated cylinder or measuring cup and be arranged on glass bell jar inside.
Preferred as technique scheme, described drying agent bag is the gauze bag that silica gel is housed.
In sum, the utlity model has following beneficial effect:
The utility model is when the transpiration of checking plant, just can find that very intuitively the water in graduated cylinder or the measuring cup has reduced, therefore the required water of plant transpiration effect obtains from graduated cylinder or measuring cup as can be known, in addition, the place to go of water also is readily appreciated that, be that the agent bag that is dried is given and to have been absorbed, but also can how much have increased weight water loss in what and graduated cylinder or the measuring cup that calculating moisture that plant absorbs has and how much distribute by transpiration by the drying agent bag.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Among the figure, 1-glass pad, 2-graduated cylinder, 3-glass bell jar, 4-drying agent bag.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
This specific embodiment only is to explanation of the present utility model; it is not to restriction of the present utility model; those skilled in the art can make the modification that does not have creative contribution to present embodiment as required after reading this instructions, but as long as all are subjected to the protection of Patent Law in claim scope of the present utility model.
As shown in Figure 1, a kind of plant transpiration effect experimental demonstration instrument, it comprises glass pad 1, is arranged on the graduated cylinder 2 on the glass pad, the drying agent bag 4 that covers the glass bell jar 3 of described graduated cylinder 2 and be arranged on glass bell jar 3 inside.Described drying agent bag 4 is for being equipped with the gauze bag of silica gel.
The operation specific as follows of this plant transpiration effect experimental demonstration instrument:
Get an amount of silica gel, with gauze silica gel is wrapped up, the quality of weighing silica gel and gauze is designated as m1.
In graduated cylinder, add v1 ml water, insert the plants shoots of healthy growth.
After a period of time, open glass bell jar 3, slowly extract plants shoots out, observe water surface decline situation, the water level v2 ml in the record graduated cylinder.
The quality of weighing silica gel and gauze is designated as m2.
Be absorbed the quality of water and the quality that gauze bag increases in the calculating graduated cylinder, and compare and analysis.Computing formula is as follows:
Quality=m2-the m1 of the rising water that scatters and disappears
Be absorbed quality=(v1-v2) * ρ
Water
Claims (2)
1. plant transpiration effect experimental demonstration instrument, it is characterized in that: it comprises the glass pad, is arranged on graduated cylinder or the measuring cup on the glass pad, the drying agent bag that covers the glass bell jar of described graduated cylinder or measuring cup and be arranged on glass bell jar inside.
2. plant transpiration effect experimental demonstration instrument according to claim 1, it is characterized in that: described drying agent bag is the gauze bag that silica gel is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020572606XU CN201893065U (en) | 2010-10-22 | 2010-10-22 | Plant transpiration experimental demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020572606XU CN201893065U (en) | 2010-10-22 | 2010-10-22 | Plant transpiration experimental demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201893065U true CN201893065U (en) | 2011-07-06 |
Family
ID=44222537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020572606XU Expired - Fee Related CN201893065U (en) | 2010-10-22 | 2010-10-22 | Plant transpiration experimental demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201893065U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313791A (en) * | 2011-07-25 | 2012-01-11 | 南京信息工程大学 | Plant physiological effect indicator |
| CN108766172A (en) * | 2018-09-05 | 2018-11-06 | 宁波天顶星光电科技有限公司 | A kind of middle and primary schools' plant growth physiological test instrument |
-
2010
- 2010-10-22 CN CN201020572606XU patent/CN201893065U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313791A (en) * | 2011-07-25 | 2012-01-11 | 南京信息工程大学 | Plant physiological effect indicator |
| CN108766172A (en) * | 2018-09-05 | 2018-11-06 | 宁波天顶星光电科技有限公司 | A kind of middle and primary schools' plant growth physiological test instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20111022 |