SSCE June 1988 Biology Practical Questions. The set-up practical in I and II illustrate breathing mechanism in mammals in:

(a) Name the structures in mammals that are equivalent in function to the parts labeled
(i) Glass tube
(ii) Bell jar
(iii) Balloons
(iv) Rubber sheet
(v) A
(vi) B.
(b) Name the processes illustrated by diagrams (i) I (ii)
(c) In which of the bell jars is the pressure lower?

Solution
(a) (i) Trachea
(ii) Rib cage
(iii) Lungs
(iv) Diaphragm

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