The number of $RBCs$ in man increases if he lives at a higher altitude; this is because

Which of the following is a plant showing scotoactive opening of stomata?

Persons living at high altitude will have

What are the functions of hemoglobin and chlorophyll?

Which of the following is not the function of the conducting part of the respiratory system?

Which of the following statement$(s)$ is/are correct?
$(a)$ High concentration of carbonic anhydrase in RBCs.
$(b)$ High concentration of carbonic anhydrase in blood plasma.
$(c)$ Every $100 \ ml$ of deoxygenated blood delivers approximately $4 \ ml$ of $CO_2$ to the alveoli.
$(d)$ $20-25\%$ of $CO_2$ is carried by hemoglobin as oxyhemoglobin.