27. a) Why is there a difference in the rate of breathing between aquatic
organisms and terrestrial organisms? Explain.
(b) Draw a diagram of human respiratory system and label pharynx
trachea, lungs, diaphragm and alveolar sac on it.
OR
(a) Name the organs that form the excretory system in human beings.
(b) Describe in brief how urine is produced in human body
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27.
a)Aquatic animals take in the oxygen dissolved in water. The amount of dissolved oxygen in water is fairly low compared to the amount of oxygen in the air. Therefore, rate of breathing in aquaticorganisms is much faster than in terrestrial organisms....
B) Drawing is above plz see it
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