33 10 points Place a well growing plant in an airtight colorless transparent glass cover

1.First empty: I'm not sure if my explanation is correct. If there is not enough oxygen, the concentration of CO2 will be too high, and the stomata will close, which will inhibit respiration, so the decomposition rate of pyruvate will decrease.

Second, if the light is stopped suddenly, the amount of [H] and ATP decreases, and the amount of C3 and C5 is blocked, and the amount of C3 increases. Although the amount increases, the amount of C5 decreases, so the reaction rate of C5+CO2 C3 decreases.

It's six o'clock in the middle of the day, when the temperature is cooler. Low temperatures weaken plant respiration to reduce the consumption of organic matter.

As for 16 o'clock to 18 o'clock. I think the stomata are closed because the CO2 concentration is too high. The photoreaction phase of photosynthesis to produce ATP is hindered and weakened.

The temperature of point D and point E is the same, but the content of CO2 is obviously high at point D, and it can be seen from the figure that the photosynthesis at point D is "respiration and photosynthesis at point E" respiration, so it is affected because the light at point D is weak.

3.As for this question, I personally think that according to the figure, photosynthesis "respiration, logically speaking, should be the amount of CO2 released" O2 but why it is less than I don't understand. I'll tell you when I ask someone.

1.After the light is stopped, the light reaction does not proceed, and the reduction of C3 cannot be carried out, while the fixation of carbon dioxide can still be carried out, which helps C3 to increase and C5 to decrease.

, carbon dioxide concentration restricts photosynthesis, the rate of photosynthesis decreases, and ATP synthesis decreases.

The photosynthesis at point D is greater than that of respiration, the photosynthesis at point E is smaller than that of respiration, and the photosynthesis at point D should be greater than that of point E. This one is not clear.

3.According to the analysis of 2, photosynthesis is greater than respiration, and m is less than n

A At point C, light is just greater than respiration, and there is accumulation at the beginning, so the organic matter content in the plant is lowest at point C.

b At this time, the light intensity decreases, so photosynthesis decreases, so the rate of ATP synthesis in chloroplasts decreases.

c Since the period before the sun is the coldest, the temperature decreases and inhibits respiration, so the increase rate of CO2 concentration in the BC segment is slower than that in the AB segment.

The CO2 concentration at point D is lower than that at point A, because the net light and greater than 0 indicate that the organic matter content in the plant has increased after 24 hours, so D is wrong.

The Mathematics Q&A team will answer for you, I hope it will be helpful to you.

Selective C has both photosynthesis and respiration, photosynthesis absorbs CO2, respiration releases CO2, at first photosynthesis is greater than respiration, until photosynthesis is equal to respiration, to achieve dynamic equilibrium.

I wish you progress in your studies and go to the next level! (

First of all, the container is closed, and the plant cannot breathe and communicate with the outside world.

Cultivated under light conditions, plants carry out both respiration and photosynthesis Plants begin to photosynthesize, using CO2 in cells and air for photosynthesis, and photosynthesis is greater than respiration.

It was not until later that respiration equaled photosynthesis and reached equilibrium.

After 5 hours, it was found that the oxygen was 300MP more than the original, indicating that the photosynthesis was 300MP (oxygen), but the amount of grapes produced by photosynthesis should be the total photosynthetic amount, and in order to find the total photosynthesis, it was necessary to add the photosynthetic to the amount consumed by respiration, but this question did not explain how much respiration was consumed, so it was impossible to determine.

The answer is D.

Hello, green plants in photosynthesis to produce glucose at the same time to breathe to consume glucose in this question, asked about the total amount of glucose produced by photosynthesis, should add the glucose consumed by respiration, so choose b greater than 300mg

a. The change of carbon dioxide concentration in the glass cover is related to photosynthesis and respiration, the increase indicates that the respiration rate is greater than the photosynthetic rate, and the decrease indicates that the respiration rate is less than the photosynthetic rate The decrease in carbon dioxide concentration starts from the de segment because the respiration rate is less than the photosynthetic rate, and the point d indicates the photosynthetic rate = respiration rate, and the photosynthesis starts before the d point, and a is wrong;

The increase of carbon dioxide concentration in section B and BC is slower than that in section AB, because the low temperature in the early morning weakens plant respiration and reduces the amount of carbon dioxide released.

c, fg section for the time period in the afternoon, when the temperature is high, the transpiration is strong, most of the stomata are closed, the photosynthetic rate decreases, and the absorption of carbon dioxide by the leaves is reduced, c is correct;

The lowest carbon dioxide concentration at point d indicates that the carbon dioxide absorbed the most in the glass cover and the most organic matter accumulated by plants, which is correct

Therefore, a

With the continuous progress of photosynthesis, the carbon dioxide content in the closed container is gradually consumed, the concentration decreases, and the photosynthesis intensity decreases. When the carbon dioxide concentration is reduced to a certain level, the photosynthesis and respiration intensity of the plant is equal, and the carbon dioxide concentration in the device remains relatively stable

Therefore, c

If the above conditions remain unchanged, the plant has sufficient light for 10 hours, and no light is given for the rest of the time, then the total amount of glucose synthesized by the plant is 60 10 = 600 mg, the carbon dioxide produced by cellular respiration is 10 38 + 14 25 = 730 mg, and the glucose consumed is 180 730 (44 6) =, then the accumulation of glucose in one day and night is;

If you calculate CO2 as a whole for 24 hours, the amount of CO2 produced in 10 hours of light and 14 hours of darkness is different.

The rate of glucose synthesis in photosynthesis is an interference condition (high temperature in light and stronger respiration intensity than in darkness) and cannot be used for calculation.

Calculation idea: 10 hours of light glucose accumulation minus 14 hours of dark glucose consumption = 24 hours of glucose accumulation.

50x10—25x14）：x 44x6）:180 x=