Question

5. Tick the correct answer:
(a) In cockroaches, air enters the body through
(i) lungs
ingills
fili) spiracles
(iv) skin
(b) During heavy exercise, we get cramps in the legs due to the
accumulation of
(1) carbon dioxide (11) lactic acid
(ili) alcohol
(iv) water
(c)
Normal range of breathing rate per minute in an average adult
person at rest is:
(1) 9-12
fli) 15-18
(iii) 21-24
(iv) 30-33
(d) During exhalation, the ribs
(1) move outwards (ii) move downwards
(iii) move upwards
(iv) do not move at all​

Answer 1

(a) question no answer is skin .

(b) question no answer is water .

( c) question no answer is ,30 33.

(d) question no answer is do not move at all

Answer 2

$\boxed{a}\:\blue{(iii)}\:\sf{spiracles}$

$\boxed{b}\:\blue{(ii)}\:\sf{lactic\:acid}$

$\boxed{c}\:\blue{(ii)}\:\sf{15-18}$

$\boxed{d}\:\blue{(ii)}\:\sf{move\:downwards}$