Question

Tick (V) the correct answer.
1. Through which tubes does air enter the lungs from the windpipe?
(a) Bronchioles (b) Bronchi
(c) Trachea (d) Alveoli
2. In insects, exchange of gases takes place through
(a) Lungs
(b) Spiracles
(c) Stomata (d) Gills
3. Which of these is not true about cellular respiration?
(a) It occurs only during the day (b) It releases energy
(c) It occurs in all living things
(d) It utilizes oxygen and liberates carbon dioxide
4. Where in the respiratory system does oxygen from the air breathed in pass into the blood?
(a) Bronchioles (6) Trachea
(c) Alveoli
(d) Bronchi​

Answer 1

Answer:

1(c),2(b),3(a),4(c)

Answer 2

Answer:

1. Bronchioles

2. spiracles

3. a

4. 6