11th Biology Unit 13 Gaseous Exchange Notes

11th Biology unit 13 MCQs, short and long questions from past papers. All notes are according to alp smart syllabus 2023 with the solution.

11th Biology Unit 13 MCQs

Here are some examples of MCQs from these notes. Read online full notes download at the end.

How much air is held by lungs when they are fully inflated in man?
(A) 5 liters
(B) 4.5 liters
(C) 4 liters
(D) 3.5 liters

Water is more viscous than air:
(A) 10 Times
(B) 20 Times
(C) 50 Times
(D) 100 Times

Breathing rate in man at rest is: (LHR. GII, 2014)
(A) 0.1-15 times / min
(B) 15-20 times / min
(C) 20-25 times / min
(D) 25-30 times / min

  1. The main site of exchange of Gases in plants are: (GRW. GI, 2016)
    (A) Stomata
    (B) Lenticel
    (C) Cuticle
    (D) Epidermis
  2. The exchange of gases (CO2 and 02) between the organism and its environment is
    called: (LHR. GI, 2016)
    (A) Respiration
    (B) External respiration
    (C) Cellular perspiration
    (D) Anaerobic Respiration

Fsc Biology Gaseous Exchange MCQs

  1. Oxygen content of fresh air are: (RWP. GI, 2016) (DGK. 2019)
    (A) 200ml / litre
    (B) 100ml / litre
    (C) 10ml / litre
    (D) 150ml / litre
  2. When oxygen saturation is 100 mm of mercury then hemoglobin saturation is:
    (LHR. GI, 2014)
    (A) 100%
    (B) 98%
    (C) 78%
    (D) 68%
  3. Hemoglobin in man increases the oxygen-carrying capacity of the blood to about:
    (LHR. GII, 2014)
    75 times
    (B) 50 times
    (C) 60 times
    (D) 100 times
  4. Respiratory activity which occurs in plants during day time is called: (LHR. GI, 2016)
    (A) Respiration
    (B) Transpiration
    (C) Photorespiration
    (D) Cutaneous respiration
  5. The complex cartilaginous structure at the upper end of the trachea is called:
    (GRW.GI, 2016)
    (C) Bronchiole
    (D) Pharynx
  6. Blood contains oxygen per 100 ml of blood when hemoglobin is 98% saturated:
    (GRW. GI, DGK. GII, 2015)
    19.6 ml
    (B) 18.6 ml
    (C) 17.6 ml
    (D) 16.6 ml

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