*1* What is respiration.

*2* Write chemical equations that summarize respiration in human.

*3* State the functions of the following (I) Lungs (ii) Trachea (III) Diaphragm (iv) Larynx.

*4* Describe briefly how air gets into the lungs.

*5* Briefly describe the breathing mechanism during inhalation of air.

*6* Mention the main gas present in (I) inhaled air (ii) Exhaled air.

*7* State the importance of the hair- like structures and mucus in the nasal cavity.

*8* State three (3) differences between Aerobic respiration and Anaerobic respiration.

*9* Define the following (I) Breathing (ii) Inhalation (III) Exhalation.

*10* What are respiratory organ? Name the respiratory organ of the following organs. Man, fish, frog or toad, insects, spider and scorpion, Earth worm.