Respiration in ...

If oxygen is to inhalation, then carbon dioxide is to

Which of the following get(s) trapped in the hair present in our nasal cavity?

It is printed on the cigarette box that ''Smoking is injurious to health'' because

Assertion (A): No exchange of gases takes place in the roots of the plant.
Reason (R): Roots of the plant do not contain stomata.

A: Breathing rate increases during vigorous exercise.
B: Breathing rate is a measure of number of times a person inhales in a minute.

Choose the correct sequence of answers for the following sentences:

a. Breathing rate of humans at rest
b. Result of irritation caused by dust particles in the nasal cavity
c. Compound formed when CO₂ is passed through lime water
d. Spaces between the soil particles

Which organ forms the floor of the chest cavity?

a. Openings outside body of insects
b. Network of tubes in insects
c. Tube connecting lungs with throat
d. Structure where diffusion occurs with high efficiency