1. Draw a labeled diagram of the structure which open and close to facilitate gas exchange in plants.
2. Explain briefly how the air is inhaled and exhaled during breathing in humans
3. Draw a labeled diagram of Human digestive system.
4. Mention the various steps involved in the nutrion of amoeba and describe it with the help of a diagram.
5. Explain the structure of human respiratory system with the help of a diagram.
Dear Student.
Please find below the solution to the asked query.
1. Diagram of stomata.
2. Breathing is the process of taking in oxygen-rich air and giving out carbon dioxide-rich air.
Breathing in is 'inhalation' and breathing out is 'exhalation'.
Inhalation involves bringing in air from outside the body into the lungs. When we breathe in, the size of our chest increases. This happens because when air enters, the lungs expand and the ribs move outwards. Simultaneously, the diaphragm contracts and becomes flat. Thus, the size of our chest increases.
Exhalation involves removal of CO 2 from the body. When we breathe out, the size of our chest decreases. This happens because when air moves out of our lungs, the lungs contract, the ribs move back, and the diaphragm curves upwards into the chest decreasing the size of the chest.
3. Human digestive system.
Kindly ask question in separate threads.
Hope this information will clear your doubts about the topic.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
Regards.
Please find below the solution to the asked query.
1. Diagram of stomata.
2. Breathing is the process of taking in oxygen-rich air and giving out carbon dioxide-rich air.
Breathing in is 'inhalation' and breathing out is 'exhalation'.
Inhalation involves bringing in air from outside the body into the lungs. When we breathe in, the size of our chest increases. This happens because when air enters, the lungs expand and the ribs move outwards. Simultaneously, the diaphragm contracts and becomes flat. Thus, the size of our chest increases.
Exhalation involves removal of CO 2 from the body. When we breathe out, the size of our chest decreases. This happens because when air moves out of our lungs, the lungs contract, the ribs move back, and the diaphragm curves upwards into the chest decreasing the size of the chest.
3. Human digestive system.
Kindly ask question in separate threads.
Hope this information will clear your doubts about the topic.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
Regards.