Cockroach and other insects breathe through ____________  and trachea.

The respiratory organ of fish is __________

From the pharynx, air passes into a chamber called the ______________ .

In Cockroaches and other insects oxygen reaches to the cells directly through the _______________ by means of diffusion.

____________  is a part of respiratory system .

The process in which no energy is released is called _______________ .

Which of the following are correct ?

(a) The nasal cavity leads into an organ called the pharynx.

(b) The opening of pharynx, into the larynx, is guarded by a valve called the epiglottis.

Which of the following are correct ?

(a) Nasal cavity is the space inside the nose.

(b) The wall of the nasal cavity are covered with the hair that traps the dust and harmful particles and purify the inhaled air.

Which of the following are correct ?

(a) Terrestrial organisms use atmospheric oxygen for respiration, which is absorbed by different organs in different animals.

(b) All the respiratory organs  in terrestrial organisms have a structure that decrease the surface area and is in contact with the oxygen rich atmosphere.

Which of the following are correct ?

(a) Biochemical process in which glucose is  oxidized to  and    along with  exchange of gases is called breathing .

(b) Enzymes are involved in respiration .

(c) Respiration is an active metabolic process as it involves conversion of chemical energy into other forms.