If you are looking for the MCQs of Biology 11th class chapter 13 then here we have written all important FSc 1st Year Biology Chapter 13 MCQs pdf Download
1. Gaseous exchange occurs in frog through the lungs is called:
a) Cutaneous respiration b) Photorespiration c) Pulmonary respiration d) Cellular respiration
Correct Answer
Pulmonary respiration
2. The number of airs sacs in birds is:
a) 6 b) 7 c) 8 d) 9
Correct Answer
9
3. The number of air sacs in birds are:
a) 6 b) 7 c) 8 d) 9
Correct Answer
9
4. During photorespiration glycine after its formation diffuses into:
a) Ribosome b) Mitochondria c) Peroxisome d) Glyoxysome
Correct Answer
Mitochondria
5. The main sites of exchange of gases in plants are:
a) Lenticels b) Cuticles c) Epidermis d) Stomata
Correct Answer
Stomata
6. Air space between mesophyll Cells of a leaf comprises of the total volume of leaf:
a) 20% b) 30% c) 40% d) 50%
Correct Answer
40%
7. During photorespiration glycolate diffuses into the membrane-bounded organelle named as:
a) Mitochondria b) Ribosome c) Peroxisome d) Golgi bodies
Correct Answer
Peroxisome
8. A liter of water contains ml oxygen:
a) 10 b) 20 c) 30 d) 40
Correct Answer
10
9. The respiratory system is more efficient in:
a) Amphibians b) Birds c) Reptiles d) Fishes
Correct Answer
Birds
10. The respiratory pigment present in muscle is called:
a) Myoglobin b) Globin c) Haemocyanin d) Haemoglobin
Correct Answer
Myoglobin
11. Tiny thin-walled ducts called parabronchi are present in the lungs of:
a) Mammals b) Amphibians c) Birds d) Reptiles
Correct Answer
Birds
12. All of the following contain cartilage expect:
a) Larynx b) Trachea c) Bronchioles d) Bronchi
Correct Answer
Bronchioles
13. Emphysema is a breakdown of:
a) Haemoglobin b) Alveoli c) Teeth d) Tissues
Correct Answer
Alveoli
14. Lungs are covered with double membranous sac called as:
a) Pleura b) Pericardium c) Scrotum d) Diaphragm
Correct Answer
Pleura
15. When oxygen tension is 115 mm of mercury then hemoglobin saturation is:
a) 100% b) 98% c) 78% d) 68%
Correct Answer
98%
16. How much the air spaces comprise of the total volume of the leaf:
a) 20% b) 30% c) 40% d) 50%
Correct Answer
40%
17. How much air lungs can hold when they are fully inflated?
a) 5 litres b) 4 litres c) 4.5 litres d) 3.5 litres
Correct Answer
5 liters
18. In earthworms exchange of gases mainly occurs through:
a) Gills b) Lungs c) Skin d) Ostia
Correct Answer
Skin
19. Lungs are covered with double membrane sacs called:
a) Pleura b) Scrotoum c) Pericardium d) Diaphragm
Correct Answer
Pleura
20. During photorespiration. Glycine is converted into serine in the:
a) Mitochondria b) Ribosome c) Golgi bodies d) Chloroplast
Correct Answer
Mitochondria
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