Question

(1) Explain the working of diaphragm?
(2) Walls if trachea doesn’t collapse even there is less air in it. Why?
(3) Respiration is called catabolic process.Give reason.
(4) Explain why respiration is a vital process for all organisms.
(5) Explain why respiration is reverse of photosynthesis.
(6) Anaerobic respiration less efficient than aerobic. Why?
(7) Arteries have thick elastic walls. Why?
(8) What is double circulation and why is it necessary ?
(9) Desert plants absorb CO2 at night. Why?
(10) Give reason:-
(a) Rate if breathing increase during heavy exercise.
(b) Lack of O2 in muscles leads to cramps.
(11) Function of epiglottis.

Answer 1

2.THE WALLS OF TRACHEA DOSENT COLLAPSE BECAUSE IT HAS CARTILIGINIOUS RINGS THAT INCREASE THE SURFACE OF TRACHEA AND PREVENT IT FROM COLLAPSE

3.RESPIRATION IS CATABOLIC PROCESS BECAUSE IT I AUTOMATIC PROCESS WHERE DOES NOT ANY KIND OF PHYSICAL EFFORT TAKES PLACE