Please answer all parts please it is important
Dear student,
Please find below the answer:
1. The set up is done to demonstrate that dry seeds do not respire and that the amount of O2 absorbed in respiration is equal to the CO2 released.
2. The liquids used in the setup are the salt solution and caustic potash solution.
3. The retort containing dry seeds has its tube dipped in a beaker filled with caustic potash solution. The retort with soaked seeds has its tube dipped in a beaker filled with the salt solution. Another retort has soaked seeds with its tube dipped in a beaker filled with caustic potash solution.
4. In apparatus A and B, there is no change but in apparatus C, the caustic potash solution rises in the tube of retort.
5. In apparatus A, there is no change because the seeds present in it are dry and hence, they perform no respiration. Had there been respiration the carbon dioxide must have released and caustic potash solution must have absorbed it.
In apparatus B, the seeds are respiring as they are soaked seeds but there is no change observed because the carbon dioxide released in the process of respiration is insoluble in the salt solution. The amount of oxygen absorbed in this case is equal to the amount of carbon dioxide released.
In apparatus C, the caustic potash solution rises in the retort tube. This is because the soaked seeds are respiring. The released carbon dioxide in this process is absorbed by caustic potash solution. This creates a vacuum which is overcome by the rise of caustic potash solution in the retort tube, thereby confirming the fact that carbon dioxide is produced during respiration.
6. The process under study is respiration.
Respiration takes place in the plant cells by the diffusion of gases through stomata, lenticels etc. and release of energy from the food that plants make by the process of photosynthesis.
Hope this clears your doubt.
Regards.
Please find below the answer:
1. The set up is done to demonstrate that dry seeds do not respire and that the amount of O2 absorbed in respiration is equal to the CO2 released.
2. The liquids used in the setup are the salt solution and caustic potash solution.
3. The retort containing dry seeds has its tube dipped in a beaker filled with caustic potash solution. The retort with soaked seeds has its tube dipped in a beaker filled with the salt solution. Another retort has soaked seeds with its tube dipped in a beaker filled with caustic potash solution.
4. In apparatus A and B, there is no change but in apparatus C, the caustic potash solution rises in the tube of retort.
5. In apparatus A, there is no change because the seeds present in it are dry and hence, they perform no respiration. Had there been respiration the carbon dioxide must have released and caustic potash solution must have absorbed it.
In apparatus B, the seeds are respiring as they are soaked seeds but there is no change observed because the carbon dioxide released in the process of respiration is insoluble in the salt solution. The amount of oxygen absorbed in this case is equal to the amount of carbon dioxide released.
In apparatus C, the caustic potash solution rises in the retort tube. This is because the soaked seeds are respiring. The released carbon dioxide in this process is absorbed by caustic potash solution. This creates a vacuum which is overcome by the rise of caustic potash solution in the retort tube, thereby confirming the fact that carbon dioxide is produced during respiration.
6. The process under study is respiration.
Respiration takes place in the plant cells by the diffusion of gases through stomata, lenticels etc. and release of energy from the food that plants make by the process of photosynthesis.
Hope this clears your doubt.
Regards.