Selina solutions

Selina solutions

Grade 6

Respiratory system | Long Answer Questions (LA)

Question 1

Q1) Why is respiratory system necessary?

Solution:

Humans have a well-developed respiratory system that is responsible for breathing in oxygen-rich air and breathing out carbon dioxide.

The lungs are the main respiratory organs where the exchange of gases takes place. The path through which the air travels to the lungs and back to the atmosphere is called the respiratory tract. It comprises the nose (nostrils)and nasal cavity, pharynx, larynx, trachea, bronchi, which branches further into bronchioles, alveolar sacs and alveoli.

The blood then transports the oxygen to the individual cell where it is used for the chemical process of respiration. The second part involves taking out carbon dioxide, which is a waste product of cellular function.

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subject-cta

Question 1

Q1) Why is respiratory system necessary?

Solution:

Humans have a well-developed respiratory system that is responsible for breathing in oxygen-rich air and breathing out carbon dioxide.

The lungs are the main respiratory organs where the exchange of gases takes place. The path through which the air travels to the lungs and back to the atmosphere is called the respiratory tract. It comprises the nose (nostrils)and nasal cavity, pharynx, larynx, trachea, bronchi, which branches further into bronchioles, alveolar sacs and alveoli.

The blood then transports the oxygen to the individual cell where it is used for the chemical process of respiration. The second part involves taking out carbon dioxide, which is a waste product of cellular function.

Still have questions? Our expert teachers can help you out

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subject-cta
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