10th class Biology chapter 1 online mcq test with answers for matric part 2 Biology chapter 1(Gaseous Exchange)

Gaseous Exchange

Sr. #	Questions	Answers Choice
1	In which of the following gaseous exchange occur through stomata?	The leaves and young stems Wood stems and nature roots. Young roots The aquatic plants
2	Point out the FALSE statement about respiration.	Gases can easily pass through the walls of the alveoli Gas exchange in lungs is very efficient because lungs provide large surface area In emphysema, the walls of alveoli break and there is more surface area. Dust particles can damage the lung by irritating the inner alveoli surface.
3	In human and other higher animals, the exchange of gases is carried out by:	Skin Respiratory Air passageway Lungs
4	Amount of nitrogen in expired air is:	70% 80% 79% 4%
5	Amount of carbon dioxide in inspired air is:	16% 0.04% 4% None of these
6	Amount of oxygen in expired air is:	21% 16% 0.04% 4%
7	During exercise or other hard physical works the breathing rate may increase up to.	30-40 times per minute 50-60 times per minute 60-70 times per minute 70-80 times per minute
8	The normal breathing rate in buman being is:	10-40 times per minute 16-20 times per minute 30-40 times per minute None of these
9	Which of the following is called voice box?	Trachea Larynx Bronchi Alveoli
10	How many lobs are present in right lung?	2 3 4 5
11	How many pairs of ribs in humans?	12 24 26 30
12	C-Shaped cartilaginous rings are present in the wall of.	Bronchi Bronchioles Alveoli Trachea