(C) in anaerobic and produces carbon dioxide (D) takes place onlyin darkness
- Muscle cells engaged in vigorous activity build up a high
concentration of
(A) lactic acid (B) pyruvic acid (C)alcohol (D) cholesterol
- Exchange of respiratory gases takes place in an earthworm through
(A) moist skin (B) gills (C) trachea (D) lungs- Oxygen is transported in blood mainly by
(A) leucocytes (B) erythrocytes (C)thrombocytes (D) blood plasma
SUBJECTIVE QUESTIONS
SHORT ANSWER TYPE QUESTIONS
- Write any two points of difference between respiration in plants and
respiration in animals.
- What do you mean by fermentation?
- Describe the mode of respiration in an insect with a diagram.
- What are the functions of respiratory system?
- Why do walls of trachea not collapse when there is less air in it?