Biology MCQs Online Quiz Test 32

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Biology Solved MCQs For Public Service Commission Exams

Q.1: Number of spiracles present in cockroach is——?

  1. 15
  2. 10
  3. 20
  4. 30

C

Q.2: Of the following, which one is a contagious disease?

  1. Tuberculosis
  2. Lungs cancer
  3. Asthma
  4. Emphysema

A

Q.3: Number of spiracles present in the thorax of cockroach is——?

  1. 2
  2. 3
  3. 5
  4. 4

D

Q.4: Which of the following promotes growth in plants?

  1. Photorespiration
  2. Calvin cycle
  3. Both of these
  4. None of these

B

Q.5: When abdomen expands, the number of spiracles open is——-?

  1. 2
  2. 3
  3. 6
  4. 8

D

Q.6: Which of the following animals has a respiratory system with one way flow of the air through the lungs, and the air is renewed after inspiration?

  1. Cockroach
  2. Earthworm
  3. Aves
  4. Frogs

C

Q.7: The maximum amount of oxygen which normal human blood absorbs and carries at sea level is —- per 100 ml of blood.?

  1. 10 ml
  2. 20 ml
  3. 30 ml
  4. 40 ml

B

Q.8: Oxygen contents per liter of air is——?

  1. 10 ml
  2. 100 ml
  3. 200 ml
  4. 100ml

C

Q.9: Haemoglobin can be almost completely oxygenated by an oxygen pressure of —– of mercury.?

  1. 10 mm
  2. 60 mm
  3. 10 cm
  4. 100 mm

D

Q.10: Water is —– times viscous than air?

  1. 50
  2. 1000
  3. 5000
  4. 8000

A