A disease of longs in which inside of the lungs is damaged resulting in cough and fever?

A. Lung cancer
B. Asthma
C. Emphysema
D. Pulmonary tuberculosis

Of the following, which one is a contagious disease?

A. Tuberculosis
B. Lungs cancer
C. Asthma
D. Emphysema

Which of the following promotes growth in plants?

A. Photorespiration
B. Calvin cycle
C. Both of these
D. None of these

Which of the following animals has a respiratory system with one way flow of the air through the lungs, and the air is renewed after inspiration?

A. Cockroach
B. Earthworm
C. Aves
D. Frogs

Percentage of CO2 carried as carboxyhaemoglobin is_________?

A. 5%
B. 70%
C. 20%
D. 10%

Arterial blood contains _________ of CO2 per 100 ml of blood

A. 54 ml
B. 60 ml
C. 64 ml
D. 50 ml

More than ___________ compounds of tar of tobacco smoke are involved to cause cancer?

A. 5
B. 90
C. 15
D. 10

Haemoglobin can be almost completely oxygenated by an oxygen pressure of __________ of mercury.

A. 10 mm
B. 60 mm
C. 10 cm
D. 100 mm

Important factors which affect the capacity of haemoglobin to combine with oxygen is

A. Temperature
B. Carbon dioxide
C. Ph
D. All of these

The increase in pH of blood has ________ effect on the oxygen carrying capacity of haemogolobin?

A. Plus ve
B. – ve
C. No
D. All of these