Biology Past Papers Class 12

All Solved biology past papers class 12 written by Honorable Professor Mr. Adnan Haider Suib. These notes are very helpful in the preparation of biology past papers class 12 of all Punjab Boards (Faisalabad Board, Gujranwala Board, Lahore Board, Multan Board, Rawalpindi Board, D.G. Khan Board, Bahawalpur Board,  Sargodha Board, Sahiwal Board ) for the students of the Intermediate part-II and these are according to the paper patterns of all Punjab boards.

Summary and Contents:
Topics which are discussed in the notes are given below:
  • Here are the detailed biology past paper class 12 to help you prepare for your exams.
  • Arginase splits the arginine to form urea and …….. .
  • (a) Citrulline      (b) Ornithine    (c) Creatinine     (d) Histidine
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  • 1. Urine leaves kidney through a duct called?
  • (a) Urethra      (b) Ureter      (c) Urinary bladder     (d) Pelvis
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  • 2. Blood supplied to kidney from each cardiac beat is:
  • (a) 10 %      (b) 20 %      (c) 30 %     (d) 50 %
  • 3. Mammalian kidney including human is adapted to conserve water up to …….. .
  • (a) 69.5 %      (b) 79.5 %      (c) 89.5 %     (d) 99.5 %
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  • 4. All the collecting tubules of human kidney finally discharge into the ….. .
  • (a) Bowman's capsule      (b) Glomerulus      (c) Pelvis     (d) Urethra
  • 5. High degree of renal failure is also called?
  • (a) Uremia     (b) Leucaemia       (c) Anemia      (d) Lithotripsy
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  • 6. The incidence of calcium oxalate type stones are:
  • (a) 75 %      (b) 15 %      (c) 10 %       (d) 70 %
  • 6. Increased plasma level of urea is an indication of ……. .
  • (a) Renal failure      (b) Kidney stone    (c) Hypocalcemia      (d) Hyperoxaluria
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  • 7. Abdomen has peritoneal cavity , lined by a thin epithelium called:
  • (a) Peritonium      (b) Pericardium      (c) Sacrotal sac         (d) Pleura
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  • 8. The human abdominal cavity is lined by a thin epithelium called?
  • (a) Ectoderm     (b) Endoderm   (c) Peritonium      (d) Epidermis
  • 9. Non-surgical removal of kidney stones is called?
  • (a) Dialysis     (b) Lithotripsy     (c) Uremia     (d) Kidney transplant
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  • 10. High level circulating calcium in the blood is called?
  • (a) Hypercalcemia    (b) Hypoglycemia   (c) Osteomalcia    (d) Hyperoxaluria
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  • 11. Super cool cytosol , without ice formation , is caused by…… .
  • (a) Heat shock protein     (b) Unsaturated fatty acids (c) Solutes    (d) Enzymes
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  • 12. Which animal is not poikilotherm ?
  • (a) Star-fish      (b) Frog      (c) Tortoise     (d) Parrot
  • 54. Lizards bask is sun to gain ….. .
  • (a) Heat       (b) Cold       (c) Air       (d) Moisture
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  • 13. The animals that generate their own body heat through heat production as by product during metabolism are called?
  • (a) Endotherm       (b) Ectotherm       (c) Heterotherm       (d) All of these
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  • 14. Most land mammals respond to cold by raising their ……. .
  • (a) Tail        (b) Head       (c) Legs          (d) Furs
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  • 15. Bats and humming Birds are called?
  • (a) Ectoderm        (b) Endotherm        (c) Poikilotherm       (d) Heterotherm
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  • 16. Which is an endotherm?
  • (a) Bird        (b) Bar        (c) Humming bird       (d) Reptiles
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  • 17. Which of the following is not endotherm?
  • (a) Bird        (b) Amphibian        (c) Flying insects       (d) Mammals 
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