Breathing And Respiration Of Gases

Mechanisms of breathing vary among diff groups of animals depending mainly on their ____and _____.

Which organisms exchange o2 with co2 by simple diffusion over their entire body surface ?

Earthworms use their ______ for respiration .

Insects 🦟 have a _____ to transport atmospheric air within the body .

Special vascularised structures called gills are used by most of ___ and _____. (among invertebrates )

In aquatic arthropods and molluscs 🦪 use ______ respiration .

How do terrestrial form of invertebrates respire ?

Among vertebrates , __,___,___and____respire through lungs .

Ways through which amphibians like frogs 🐸 can respire -

Terrestrial form of invertebrates respire through _____respiration .

The external nostrils lead to the ____ through the nasal passage .

The nasal chamber opens into the _____.

The pharynx opens through the _______region into the ______.

Larynx is a __box which is also called _____.

During swallowing ,____can be covered by a thin elastic cartilaginous flap called epiglottis to prevent the entry of food into the ___.

Trachea is a straight tube extending upto the ______.

Trachea divides at the level of _______into a right and left ____

Each bronchi undergoes repeated divisions to form the _____and _____ bronchi and _____ ending up in very thin terminal bronchioles .

The ____ , _____,____ and ______, and ______ are supported by incomplete cartilaginous rings .

Each _____ gives rise to a number of very thin , bag like structures called alveoli .

Alveoli are very thin ,_____walled and ____bag like structures .

What all comprises the lungs ?

We have 2 lungs which are covered by a _____ layered ___ with ____between them .

______reduces friction on the lung-surface .