401. Voice box is another name used for___________?
✅ C. Larynx
Option A: Buccal cavity Option B: Pharynx Option C: Larynx Option D: Chest Cavity Correct Answer : Larynx Read more
Biology MCQs – Page 21
402. All of the following contain cartilage except:___________?
✅ D. Bronchioles
Option A: Larynx Option B: Trachea Option C: Bronchi Option D: Bronchioles Correct Answer : Bronchioles Read more
403. Gaseous exchange through the skin is known as ______________ respiration?
✅ B. Cutaneous
Option A: Cuticular Option B: Cutaneous Option C: Skin Option D: Pulmonary Correct Answer : Cutaneous Read more
404. Active site of Rubisco is evolved to bind?
✅ D. All of these
Option A: CO2 Option B: O2 Option C: H2O Option D: All of these Correct Answer : All of these Read more
405. The increase in pH of blood has ________ effect on the oxygen carrying capacity of haemogolobin?
✅ A. plus ve
Option A: plus ve Option B: ve Option C: No Option D: All of these Correct Answer : plus ve Read more
406. Percentage of CO2 carried as carboxyhaemoglobin is_________?
✅ C. 20%
Option A: 5% Option B: 70% Option C: 20% Option D: 10% Correct Answer : 20% Read more
407. Arterial blood contains _________ of CO2 per 100 ml of blood
✅ D. 50 ml
Option A: 54 ml Option B: 60 ml Option C: 64 ml Option D: 50 ml Correct Answer : 50 ml Read more
408. Water is _________ times viscous than air?
✅ A. 50
Option A: 50 Option B: 1000 Option C: 5000 Option D: 8000 Correct Answer : 50 Read more
409. Important factors which affect the capacity of haemoglobin to combine with oxygen is
✅ D. All of these
Option A: Temperature Option B: Carbon dioxide Option C: pH Option D: All of these Correct Answer : All of these Read more
410. There are _________ stomata per square cm of leaf surface in Tobacco plants?
✅ C. 100,000
Option A: 1200 Option B: 12000 Option C: 100,000 Option D: 1000 Correct Answer : 100,000 Read more
411. The air spaces may comprise upto _________ of total volume of leaf surface?
✅ C. 40%
Option A: 30% Option B: 20% Option C: 40% Option D: 50% Correct Answer : 40% Read more
412. The glycolate produced diffuses into the membrane bounded organelles called____________?
✅ B. Peroxisomes
Option A: Glyoxisomes Option B: Peroxisomes Option C: Lysosomes Option D: Mitochondria Correct Answer : Peroxisomes Read more
413. Breaking of terminal phosphate of ATP releases about ___________ Kcal of energy?
✅ D. 7.3
Option A: 6.1 Option B: 6.3 Option C: 7.1 Option D: 7.3 Correct Answer : 7.3 Read more
414. Functional units of lungs are called________?
✅ B. Air sacs
Option A: Alveoli Option B: Air sacs Option C: Parabronchi Option D: None of these Correct Answer : Air sacs Read more
415. Lungs are spongy due to the presence of million of___________?
✅ B. Alveoli
Option A: Air sacs Option B: Alveoli Option C: Bronchioles Option D: Parabronchi Correct Answer : Alveoli Read more
416. ___________ respiration is directly involved in the production of energy, necessary for all living activities?
✅ B. Cellular
Option A: Organismic Option B: Cellular Option C: Both of these Option D: None of these Correct Answer : Cellular Read more
417. Lungs are covered with double layered thin membranous sac called___________?
✅ B. Pleura
Option A: Disphragm Option B: Pleura Option C: Pericardium Option D: Rib cage Correct Answer : Pleura Read more
418. ___________ respiration is the process by which cell utilized oxygen and produces CO2 ?
✅ A. Cellular
Option A: Cellular Option B: Organismic Option C: Both of these Option D: None of these Correct Answer : Cellular Read more
419. During rest the breathing occurs rhythmically at the frequency of _________ times per minute in human?
✅ B. 15-20
Option A: 16-30 Option B: 15-20 Option C: 5?10 Option D: 6?12 Correct Answer : 15-20 Read more
420. Of the following, which one is better respiratory medium___________?
✅ A. Air
Option A: Air Option B: Water Option C: Soil Option D: None of these Correct Answer : Air Read more