CN204423788U - A kind of photosynthesis experimental box - Google Patents
A kind of photosynthesis experimental box Download PDFInfo
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- CN204423788U CN204423788U CN201520141171.6U CN201520141171U CN204423788U CN 204423788 U CN204423788 U CN 204423788U CN 201520141171 U CN201520141171 U CN 201520141171U CN 204423788 U CN204423788 U CN 204423788U
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- bend pipe
- photosynthesis
- medical infusion
- glass bend
- infusion lines
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Abstract
The utility model belongs to experiment teaching aid class and method class, for a kind of photosynthesis experimental box, it is characterized in that: this experimental box comprises the conical flask of a 500ml, and the rubber stopper of energy jam-pack taper bottleneck, in the centre of rubber stopper, there is a hole, centre is just through a glass bend pipe, the length that the below of glass bend pipe is arranged in conical flask is 0.5cm, the part of glass bend pipe outside conical flask has a switch, the other end of glass bend pipe is closely connected with medical infusion lines, the enlargement of a storing liquid is had in the middle of medical infusion lines, the other end of medical infusion lines is closely connected with syringe, the principle of this experimental provision is: photosynthesis release O
2the liquid promoted in syringe rises, the O of generation
2more, the liquid level in syringe rises more, short, workable with the demonstration time of this experimental provision, experimentation is simple and direct, reusable, multiple experiment relevant with photosynthesis can be completed, change qualitative experiment into quantitative experiment.
Description
Technical field
The invention belongs to experiment teaching aid class and method class, is a kind of photosynthesis experimental box, specifically, is the experimental provision of a kind of " probing into environmental factor to affect intensity of photosynthesis ".
Background technology
" environmental factor is on the impact of intensity of photosynthesis " is that high school new course of biology people teaches one that in version required " molecule and cell " chapter 5 Section 4 " energy source---light and photosynthesis ", " application of photosynthesis principle " part is arranged to test.The operating process of this experiment is as follows:
1. material: green tender leaf
2. apparatus: card punch, syringe, desk lamp, 40W bulb, 100W bulb, beaker.
3. key points for operation
(1) in the dark, 2 desk lamps are loaded onto 40W bulb, 100W bulb respectively, is placed on different experiment tablees.Get 2,100mL beaker, all pour the rich carbonated clear water (prior available mouth is blown to clear water by glass tube or plastic tube) of 70mL into, be placed on the place apart from desk lamp 10cm.Now do not turn on light.
(2) tender leaf being got diameter with card punch is that the disk of 0.5cm is some.Note the selection of blade, the thin and thick of blade, color, fresh and tender degree are consistent as far as possible.Large vein to be avoided during punching.
(3) small circular blade is put into syringe, and allow syringe suck clear water, air residual in exhaustjet device.Block the aperture of syringe front end with hand, and slowly pull piston, the gas in small circular blade is overflowed.This move can repeat several times, but notes not taking out too ruthless, avoids Leaf cell structure to damage.As long as small circular blade sinks under water just passable.
(4) by each 5 of the small circular blade that internal gas is overflowed, 2 beakers that dark place fills clear water are put into respectively.At this moment blade is filled with water due to space between cells, all should sink to the bottom.
(5) desk lamp is opened.Attention: two desk lamps are unique light sources of experiment, and the light of two desk lamps can not disturb mutually.
(6) room temperature is too not low, is generally advisable with 25 DEG C.For preventing the temperature of burning water in the cup in experimentation from raising by light-illuminating, can consider to use cold light source bulb.
(7) observe and record the quantity that in the same time, two medium and small circular blades of experimental provision float, or observe, be recorded in different illumination intensity condition under float time required for equal number small circular blade.
There is following technical matters in this experiment: gets leaf disk vacuum-infiltration, and get rid of the air in Mesophyllous cell gap, fill operation blade being sunk with moisture, student is unfamiliar with principle, operating difficulties; Blowing to clear water with glass tube is that photosynthesis is supplied raw materials CO
2, be unfavorable for the control of variable; Can only qualitative understanding environmental factor on photosynthetic impact.
Summary of the invention
The present invention can solve the problem.
The present invention is achieved through the following technical solutions.
A kind of photosynthesis experimental box, it is characterized in that: this experimental box comprise a 500ml conical flask and can the rubber stopper of jam-pack taper bottleneck, the centre at rubber stopper, there is a hole, centre is just through a glass bend pipe, the length that the below of glass bend pipe is arranged in conical flask is 0.5cm, the part of glass bend pipe outside conical flask has a switch, the other end of glass bend pipe is closely connected with medical infusion lines, have the enlargement of a storing liquid in the middle of medical infusion lines, the other end of medical infusion lines is closely connected with syringe.
The principle of this experimental provision is: photosynthesis release O
2the liquid promoted in syringe rises, the O of generation
2more, the liquid level in syringe rises more, thus differentiates that the external conditions such as temperature are on the impact of intensity of photosynthesis.
Short, workable with the demonstration time of this experimental provision, experimentation is simple and direct, easy to operate, and phenomenon is obvious, and success ratio is high, is conducive to student and understands environmental factor fully to photosynthetic impact.And can reuse according to teaching needs, reusable adjustment cycle only needs 3 minutes, meets the reality of high school biology teaching.Meanwhile, the condition provided in photosynthesis experimental box is used can to complete multiple experiment relevant with photosynthesis; Changed qualitative experiment into quantitative experiment simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of photosynthesis experimental box
In figure 1 is conical flask, and 2 is glass bend pipe, and 3 is rubber stopper, and 4 is the switch on glass bend pipe, and 5 is medical infusion lines, and 51 is the enlargement of medical infusion lines storing liquid, and 6 is syringe.
Embodiment
Following results figure and experimental implementation illustrate concrete using method of the present invention.
One, photosynthesis is by illumination effect
1, prepare before experiment
(1) in 1 conical flask, 200ml NaHCO is added
3-NaCO
3, and add the surface of fresh hornwort to liquid; By the bottleneck of 3 rubber stopper jam-pack conical flasks, 4 glass bend pipes are inserted the hole in the middle of rubber stopper, smears a small amount of vaseline, prevent gas leakage; The other end of glass bend pipe is closely connected with 5 medical infusion lines.
(2), closing switch 4, utilize 6 syringes to 5 medical infusion lines injection waters, until the enlargement water of 51 medical infusion lines storing liquids is full.
(3), the other end of medical infusion lines is closely connected with syringe
(4) carry out three, above device, altogether, be labeled as No. 1, No. 2, No. 3 respectively; Prepare power and be respectively 100 watts, 200 watts, 300 watts three cold light sources; When wherein testing, the light source of 100 watts facing to headpin, the light source of 200 watts facing to No. 2 bottles, the light source of 300 watts facing to No. 3 bottles.
2, test:
(1), the rate of opening is respectively 100 watts, 200 watts, 300 watts three cold light sources, irradiation No. 1, No. 2, No. 3 experimental provisions respectively;
(2), after light source irradiation experimental provision, observe bubble bubbling situation, after 2 minutes, open 4 switches, allow O
2enter 5 medical infusion lines by 2 glass bend pipes, the liquid promoted in 6 injector syringes rises.
(3), when each test tube bubbling is basicly stable close 4 switches, and to record in 5 minutes the displacement of drop in syringe in each experimental provision.
One, photosynthesis temperature influence
1, prepare before experiment
(1), in 1 conical flask, 200ml NaHCO is added
3-NaCO
3, and add the surface of fresh hornwort to liquid; By the bottleneck of 3 rubber stopper jam-pack conical flasks, 4 glass bend pipes are inserted the hole in the middle of rubber stopper, smears a small amount of vaseline, prevent gas leakage; The other end of glass bend pipe is closely connected with 5 medical infusion lines.
(2), closing switch 4, utilize 6 syringes to 5 medical infusion lines injection waters, until the enlargement water of 51 medical infusion lines storing liquids is full.
(3), the other end of medical infusion lines is closely connected with syringe
(4) carry out three, above device, altogether, be labeled as No. 1, No. 2, No. 3, No. 4 respectively; Prepare four water-baths, topped up with water, the constant water temperature of 10 DEG C, 20 DEG C, 30 DEG C, 45 DEG C is set respectively; When wherein testing, facing to 10 DEG C of constant water temperatures for headpin, facing to 20 DEG C of constant water temperatures be No. 2 bottles, facing to 30 DEG C of constant water temperatures be No. 3 bottles, be No. 4 bottles facing to 45 DEG C of constant water temperatures.,
2, test:
(1), No. 1, No. 2, No. 3, No. 4 experimental provisions are positioned in the water-bath of the constant water temperature arranging 10 DEG C, 20 DEG C, 30 DEG C, 45 DEG C respectively;
(2), observe bubble bubbling situation, after 2 minutes, open 4 switches, allow O
2enter 5 medical infusion lines by 2 glass bend pipes, the liquid promoted in 6 injector syringes rises.
(3), when each test tube bubbling is basicly stable close 4 switches, and to record in 5 minutes the displacement of drop in syringe in each experimental provision.
Use above device, above effect can be reached:
(1), the running time is short, workable, and experimentation is simple and direct, easy to operate, and phenomenon is obvious, and success ratio is high
(2), cost of manufacture is low, and make simple, can reuse, reusable adjustment cycle only needs 3 minutes.
(3) multiple experiment relevant with photosynthesis can be completed.
(4) qualitative experiment has been changed into quantitative experiment.
Claims (1)
1. a photosynthesis experimental box, it is characterized in that: this experimental box comprise a 500ml conical flask and can the rubber stopper of jam-pack taper bottleneck, the centre at rubber stopper, there is a hole, centre is just through a glass bend pipe, the length that the below of glass bend pipe is arranged in conical flask is 0.5cm, the part of glass bend pipe outside conical flask has a switch, the other end of glass bend pipe is closely connected with medical infusion lines, have the enlargement of a storing liquid in the middle of medical infusion lines, the other end of medical infusion lines is closely connected with syringe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520141171.6U CN204423788U (en) | 2015-03-12 | 2015-03-12 | A kind of photosynthesis experimental box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520141171.6U CN204423788U (en) | 2015-03-12 | 2015-03-12 | A kind of photosynthesis experimental box |
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| Publication Number | Publication Date |
|---|---|
| CN204423788U true CN204423788U (en) | 2015-06-24 |
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ID=53474138
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520141171.6U Expired - Fee Related CN204423788U (en) | 2015-03-12 | 2015-03-12 | A kind of photosynthesis experimental box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763772A (en) * | 2018-07-25 | 2020-02-07 | 四川省兰月科技有限公司 | Qualitative identification method for ethephon in pesticide |
-
2015
- 2015-03-12 CN CN201520141171.6U patent/CN204423788U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763772A (en) * | 2018-07-25 | 2020-02-07 | 四川省兰月科技有限公司 | Qualitative identification method for ethephon in pesticide |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20170312 |
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| CF01 | Termination of patent right due to non-payment of annual fee |