breathing and exchange of gases

Question 1

the mode of exchange of gases in coelentrates is

Answer 1

entire body surface (diffusion)

Question 2

amphibians like frogs can respire through

Answer 2

lungs, gills and moist skin

Question 3

the mode of respiration through gills is known as

Answer 3

branchial respiration

Question 4

nasal chamber opens into a common passage for food and air called

Answer 4

pharynx

Question 5

pharynx opens through larynx into

Answer 5

trachea

Question 6

the cartilaginous box helping in production of sound is

Answer 6

larynx

Question 7

trachea divides into right and left primary bronchi at the level of which vertebra?

Answer 7

5th thoracic vertebra

Question 8

bronchi further undergo repeated sub-divisions and end up in very thin

Answer 8

bronchioles

Question 9

terminal bronchioles give rise to

Answer 9

alveoli

Question 10

originating from terminal bronchioles are very thin irregular- walled and vascularized bag like structures called

Answer 10

alveoli

Question 11

the membrane which covers lungs is double-layered is?

Answer 11

pleura

Question 12

the fluid that reduces friction on lung surface is

Answer 12

pleural fluid

Question 13

outer pleural membrane stays in contact with which lining?

Answer 13

thoracic lining

Question 14

the part of respiratory system constituting external nostrils up to terminal bronchioles is called

Answer 14

conducting part

Question 15

the exchange part of respiratory system constitutes both _________ and __________

Answer 15

alveoli and alveolar ducts