Question

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

Answer 1

Answer: a) spiracles

B) Lactic acid

c) 15 to 18

d) move downwards

Hope it helps

Answer 2

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

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

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

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