Question

keep
concentration of C0,!
5. Tick the correct answer:
lal In cockroaches, air enters the body through
(1) lungs
(1) gills
fin) spiracles
(iv) skin
th During heavy exercise, we get cramps in the
accumulation of
W carbon dioxide (1) lactic acid
(un) alcohol
(lv) water
in the legs due to
minute in an average a
iel Normal range of breathing rate per minute in a
person at rest is:
(0 9-12
(11) 15-18
() 21-24
(iv) 30-33
(d) During exhalation, the ribs
( move outwards (1) move downwards
(111) move upwards (lv) do not move at all​

Answer 1

Explanation:

5wale ka spiracles second ka lactic acid and last ka move upwards

Answer 2

1) Spiracles
2) Lactic acid
3)15-18
4)Move upwards