10th Biology Chapter 1 Gaseous Exchange

Sr #	Questions	A	B	C	D
1	Most of the gaseous exchange in leaf occurs through:	Stomata	General surface	Cuticle	Lenticels
2	Which of the following is called voice box?	Trachea	Larynx	Bronchi	Alveoli
3	Rate of breathing depends on concentration of which gas in blood?	Oxygen	Carbon dioxide	Nitrogen	Hydrogen
4	Total chemicals in Tobacco smoke are:	1000	2000	3000	4000
5	Percentage of carbon dioxide in exhaled air is:	16%	4%	79%	0.04%
6	Air passageway starts from:	Nose	Pharynx	Trachea	Bronchi
7	How many bronchi are found in air passageway?	1	2	Many	None
8	Lungs are organ which are:	Spongy	Elastic	Spongy and elastic	Tough
9	Powerful poison which damages brain is:	Tar	Nicotine	Carcinogen	Carbon monoxide
10	Which one is form of allergy?	Asthma	Bronchitis	Pneumonia	Lung cancer
11	In humans and other higher animals, exchange of gases occur through:	Skin	Respiratory surface	Air passageway	Lungs
12	Amount of Carbon dioxide in inspired air is:	16%	0.04%	4%	None of these
13	How many lobes are present in right lung?	2	3	4	5
14	Asthma is caused by:	Perfumes	Vitamin B-12 deficiency	Vitamin C deficiency	Vitamin K deficiency
15	A disease involving breakdown of air sacs of lungs is called:	Pneumonia	Bronchitis	Asthma	Emphysema
16	Main cause of lung cancer is:	Smoking	Viral infection	Bacterial infection	Both 2 & 3
17	Which of the following lessens the oxygen carrying capacity of hemoglobin?	Tar	Carbon dioxide	Nicotine	Carbon monoxide
18	Number of pairs of ribs in humans is:	12	24	26	None of these
19	Which remains unaffected in expired air?	O2	CO2	N2	Water vapors
20	Cluster of pouches found in respiratory system:	Bronchi	Alveoli	Bronchioles	Trachea