Question

SFE PROCESSES
51
o When and where does respiration represented by equation (ii) above take place?
( Which equation/equations represent aerobic respiration ?
(e) Which equation/equations represent anaerobic respiration ?
Which of the above reactions produces the maximum amount of energy ?
79. When a person breathes in air, the air enters into his body through an organ A having two holes B in it. The
air then passes through pharynx and larynx and enters into a tube C. The tube C divides into two smaller
P
o wer end. The two smaller tubes are attached to two respiratory organs E. Each smaller tube
divides inside the organs E to form a large number of still smaller tubes called F. The smallest tubes I have
as in which gaseous exchange takes place in the body of the person. What are A, B, C,
D, E, F and G?
30. An organism X having breathing organs A lives on land. When organism X goes under water, it cannot
survive for a long time unless carrying an oxygen cylinder. On the other hand, the organism y having
breathing organs B always lives in water and if taken out of water, it dies after a short while. Am
organism Z having breathing organs C and D which lives on the banks of ponds, lakes and rivers can
survive on land as well as in water equally well.
(a) What could organism X be ? Name the breathing organs A.
(b) What could organism Y be ? Name the breathing organs B.
(c) What could organism Z be ? Name the breathing organs C and D.
(d) Out of X, Y and Z, which organism is (1) amphibian, (ii) aquatic, and (iii) terrestrial ?
ANSWERS
1 No 2. Ethanol 5. Lactic acid 7. Diffusion 10. Root hair 11. (a) Respiration (b) Photosynthesis
17. Alveoli in lungs 24. (a) Oxygen (b) Carbon dioxide 25. (a) False (b )True (c) False 26. (a) lungs
b) alveoli (c) Alveoli (d) anaerobic, aerobic (e) fish 31. (a) Anaerobic respiration in yeast (b) Aerobic
espiration (C) Anaerobic respiration in muscle tissue of animals 44. ATP 46. The den sma diront muld
on (b) Carbon dio cich 31. (a) Anaeromp 46 The​

Answer 1

Answer for 30 question:

(a) The organism X can be any terrestrial organism and the breathing organs A are lungs

(b) The organism Y can be any aquatic organisms and the breathing organs B are gills.

(c) The organism Z can be an amphibian. Eg: Frogs and Toads which have active gills in the tadpole stage( Larval stage) and use lungs when present on land. C- Gills

D- lungs.

(d) amphibian Z

aquatic Y

Terrestrial X