In most of the thin-leaf mesophytes,the leaf stomata open during the day and close during the night. This pattern is known as:

Persons living at high altitude will have

People who have migrated from the plains to an area near Rohtang Pass six months ago will exhibit which of the following characteristics?

The respiration rate is lowest while

What does abdominal breathing indicate?

$I.$ $pO_2$ is the major factor which affects the binding of $CO_2$ with haemoglobin.
$II.$ $pCO_2$ is low and $pO_2$ is high in tissues.
$III.$ $RBC$ contains a very high concentration of carbonic anhydrase.
$IV.$ Every $100 \; mL$ of deoxygenated blood delivers approximately $4 \; mL$ of $CO_2$ to alveoli.
Select the combination of right statements.