Biology MCQs Online Quiz Test 45

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Biology Objective Type Quiz Tests Online Solutions

Q.1: Amount of water required to excrete 1gN of Urea is—–?

  1. 1 ml
  2. 50 ml
  3. 100 ml
  4. 150 ml

B

Q.2: Each ach nephridium of earthworm opens to the exterior by—–?

  1. Nephrostome
  2. Nephridiopore
  3. Flame cell
  4. Anus

B

Q.3: The main nitrogenous waste formed in the body of earthworm is/are——?

  1. Ammonia
  2. Urea
  3. Uric acid
  4. Trimethylamine oxide

B

Q.4: Which of the following excretory structure is associated with gut of the organism?

  1. Protonephridium
  2. Metanephridium
  3. Malpighian tubules
  4. Nephrons

C

Q.5: Which of the following nephrons play important role in production of concentrated urine?

  1. Crotical
  2. Medullary
  3. Juxtramedullary
  4. None of these

C

Q.6: Which of the following kidney stones are most common?

  1. Calcium oxalate
  2. Calcium phosphate
  3. Uric acid
  4. All of these

A

Q.7: Stomata open due to —– of K+ into the guard cells from the surrounding epidermis?

  1. Diffusion
  2. Active transport
  3. Osmosis
  4. All of these

B

Q.8: Which of the following is true about hearts of earthworm?

  1. There are 5-7 pairs of heart.
  2. They are present between 1-7th segments.
  3. They are present lateral to the oesophagus.
  4. They pump blood from ventral to dorsal vessel.

C

Q.9: It has been estimated that in a normal person plasma constitutes about —- by volume of blood.?

  1. 35%
  2. 45%
  3. 55%
  4. 75%

C

Q.10: Brown fat present in certain mammals is specialized in——?

  1. Providing insulation in cold environment.
  2. Providing insulation in hot environment
  3. Rapid heat production.
  4. Controlling heat production.

C