Question

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

Heya!!

1. 1.Spiracle

2.lactic acid

3.15-18

4.move down words

Hope it helps you buddy! !

Answer 2

Answer:

1.spiracles.

2.lactic acid

3.15 to 18 times.

4.move downwards.

Explanation:

PLS MARK AS BRAINLIEST.....