Thursday, 12 March 2020

12th Class Biology MCQs Quiz Test With Solutions

Here you will learn important most important question answers of 12th class Biology Notes in quiz solve exercises. All of these MCQs of class 12 biology mcq chapter wise Notes for the Punjab Board students these MCQs are helpful for PPSC tests of Biology and NTS tests of MCAT and MDCAT exams tests preparations.

12th Grade Punjab Federal Board of Pakistan Biology MCQs With Answers
Biology 12th Class MCQs


12th Grade Solved MCQs Biology Quiz List






Q.1: Dialyses means ?
  1. Removing the blood
  2. Cleaning the blood
  3. Diluting the blood
  4. Storing the blood
B
Q.2: The earth surface covered with water is ?
  1. 35%
  2. 11%
  3. 21%
  4. 33%
C
Q.3: The basic difference betweenn spermatogenesis and oogenesis is that ?
  1. During spermatogenesis two more polar bodies are produced
  2. The mature ovum is haploid while the sperm is 1n
  3. Spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only
  4. In oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are
D
Q.4: The number of chromosomes in frog is ?
  1. 52
  2. 26
  3. 13
  4. 7
B
Q.5: The primary structure for eliminating waste products in man are ?
  1. Liver
  2. Kidneys
  3. Stomach
  4. Both a And b
D
Q.6: The organic portion of bones matrix is important in providing all but ?
  1. Tensile strength
  2. Hardness
  3. To resist stretch
  4. Flexibilty
A
Q.7: Nuclear membrane disorganizes at the beginning of ?
  1. Prophase 1
  2. Metaphase 1
  3. Anaphase 1
  4. Telophase 1
B
Q.8: Each bivalent has ?
  1. Twochromatids
  2. Four chromatids
  3. Both a And b
  4. None of these
A
Q.9: Shifts in water-solute balance are managed primarily by ?
  1. Respratory system
  2. The urinary system
  3. Sweating
  4. The circulatory system
B
Q.10: Modern man is called ?
  1. Homo erectus
  2. Homo habilis
  3. Homo sapiens
  4. Homo neanderthalensis
C
Q.11: Innate behavior is all except ?
  1. Coded in DNA
  2. Modified in individuals life span
  3. Modified with species evolution
  4. Programmed responses to external stimuli
B
Q.12: About 500 ml water is needed to excrete 1g of ammonia ?
  1. Hydrogen
  2. Oxygen
  3. Nitrogen
  4. Helium
C
Q.13: Which part of the air passage way possesses chartilage plates in its wall ?
  1. Bronchiles
  2. Distal religion of bronchi
  3. Phroximal region of bronchi
  4. Trachea
B
Q.14: Commonly enzyme thermus aquatious is also known as ?
  1. Taq polymerase
  2. DNA polymerase
  3. RNA polymerase
  4. Taq ligase
A
Q.15: The study of birds is ?
  1. Ornithology
  2. Ichthyology
  3. Herpetology
  4. Entomology
A
Q.16: Information back from the control centre to the effectors as done by --------- nerve path way ?
  1. Afferent
  2. Efferent
  3. Both
  4. None of these
B
Q.17: During elongation the cell volume increase up to 150 fold due to uptake of ?
  1. Light
  2. Oxygen
  3. Water
  4. Carbon dioxide
C
Q.18: A cluster of neuron's cell bodies form ?
  1. Ganglia
  2. Cyst
  3. Lump
  4. Swelling
A
Q.19: Parathyroid hormone acts to ensure that ?
  1. Calcium levels in the blood never drop too low
  2. Sodium levels in urine are constant
  3. Potassium levels in the blood do not escalate
  4. The concentration of water in the blood is sufficient
A
Q.20: A dichromate can perceive two primary colours but is unable to perceive the one whose opsins are missing due to ?
  1. Metamorphosis
  2. Transmutation
  3. Alteration
  4. Mutation
D
Q.21: Each nuclear power station only can last for about ?
  1. 10 years
  2. 20 years
  3. 30 years
  4. 40 years
C
Q.22: The most toxic substance routinely found in the blood are metabolities of what type of molecule ?
  1. Proteins
  2. Carbohydrates
  3. Nucleic acids
  4. Fats
A
Q.23: On over the wound the cambium forms ?
  1. Callus
  2. Wood tissues
  3. Both a And b
  4. Gall
C
Q.24: Clearance of vast areas of forest for lumber planting subsistence crops or grazing cattle is called as ?
  1. Deforestation
  2. A-forestation
  3. Forestation
  4. Both a And b
A
Q.25: Human skin colour is also a quantitative trait which is controlled by ?
  1. 3 - 6 gene pairs
  2. 1 - 3 gene pairs
  3. 3 - 5 gene pairs
  4. None of these
B

F.Sc Part II | 12th Class | 2nd Year Biology Chapter Wise MCQs

TEST 1 || TEST 2 || TEST 3 || TEST 4 || TEST 5 || TEST 6 || TEST 7 || TEST 8 || TEST 9 || TEST 10 || TEST 11

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