Biology MCQs Online Quiz Test 46

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Biology Easy MCQs For FPSC Entry Test Preparation

Q.1: Panting is a representative of which mechanism?

  1. Pigmentation.
  2. Respiration.
  3. Evaporative cooling.
  4. Excretion.

C

Q.2: Formation of heat shock proteins in plants results in——?

  1. Elevation of temperature in cold conditions.
  2. Embracing the enzymes and other proteins and prevent their denaturation.
  3. Change the chemical nature of other proteins thus making them heat resistant.
  4. Help in evaporative cooling.

B

Q.3: Fishes, most of the invertebrates and amphibians are examples of —- animals?

  1. Endotherms
  2. Ectotherms
  3. Heterotherms
  4. Homeotherms

B

Q.4: The mechanism of regulation, generally between organism and its environment, of solutes and the gain and the loss of water is called—-?

  1. Homeostasis
  2. Hemostasis
  3. Osmoregualtion
  4. Thermoregulation

C

Q.5: Which of the following represents osmoregulatory steps taken by hydrophytes?

  1. Increases transpiration by increasing the surface area of the leave.
  2. Small and thick leaves to decrease the surface area proportional to the volume of the leave.
  3. Stomata closing in sufficient supply, and opening in restricted supply of water.
  4. None of these

A

Q.6: Most of the marine invertebrates are—–?

  1. Osmoconformers
  2. Osmoregulators
  3. Both depend upon the concentration of sea water
  4. None of these

A

Q.7: In human body 99% of total mass is formed of——-?

  1. 16 Bio-elements
  2. 12 Bio-elements
  3. 10 Bio-elements
  4. 6 Bio-elements

D

Q.8: Nitrogen is present in——?

  1. carbohydrates
  2. proteins
  3. lipids
  4. carbonates

B

Q.9: Biological organization is——-?

  1. simple
  2. advance
  3. complex
  4. highly complex

D

Q.10: Operculum is present in——-?

  1. bony fish
  2. sea fish
  3. cartilaginous fish
  4. none of these

A