Q1. Fill in the blanks.

                            i.        In cockroaches, air enters the body through ____________.

                           ii.        During heavy exercise, we get cramps in the legs due to the accumulation of_________________.

                          iii.        Normal range of breathing rate per minute in an average adult person at rest is_______________.

                          iv.        During exhalation, the ribs move___________________.

                           v.        Breathing is a part of the process of_________________.


Q2. True/False

                           i.        During heavy exercise the breathing rate of a person slows down. ___

                          ii.        Gills are well supplied with blood vessels for exchange of gases. _____

                         iii.        Plants carry out photosynthesis only during the day and respiration only at night. ________

                         iv.        Frogs breathe through their skins as well as their lungs. _______

                          v.        The fishes have lungs for respiration. ________

                         vi.        The size of the chest cavity increases during inhalation. _________


Q3. What are some common uses of Yeast?


Q4. Name an organism that can survive in the absence of air.


Q5. How do earthworms breathe?


Q6. What does a breath mean?


Q7. What is cell?


Q8. What are all organisms made up of?


Q9. Name the respiratory organ of birds.


Q10. What forms the floor of the chest cavity?


Q11. What are the end products of anaerobic respiration?


Q12. What is produced during anaerobic respiration in muscles that causes cramps?


Q13. What is cellular respiration?


Q14. What is breathing rate?


Q15. Why smoking should be avoided?


Q16. What are spiracles?


Q17. Why we should eat regularly?


Q18. What is a stomata and what is its function?


Q19. What is breathing?


Last modified: Sunday, 6 January 2019, 6:01 PM