"It is usually difficult to demonstrate respiration in green plants kept in sunlight." Do you agree with this fact? Explain.
Important Questions on Respiration in Organisms
The lungs are an essential organ to all mammals. The lungs are part of our breathing system. Ritu makes a model of the lungs with help of ballon, belljar, elastic membrane e.t.c. This model of lungs explain mechanism of breathing in humans and in other organisms.
When Ritu pulls down on the rubber sheet, the balloon gets bigger. Explain why.
Predict what would happen if he pushed the rubber sheet upwards.
Identify the correct statement for figures A and B
The below table represents the percentage of different gases in inhaled and exhaled air.
| Gas | Percentage in inhaled air | Percentage in exhaled air |
| Oxygen | 21 | 16 |
| Carbon dioxide | 0.03 | 4.4 |
| Nitrogen | 78 | 78 |
From the above table, it can conclude that the amount of oxygen, as well as carbon dioxide, varies between exhaled and inhaled air. Why is it so?
This experimental set-up is used to identify products of different types of the respiration process. Name the products of respiration you expect in each of the following cases.
The figure shows the process of inhalation. Write the changes that occur in these parts during exhalation.
