Biology Exam Past Questions and Answers | JAMB, WAEC and NECO

Biology is the study of life and living things. It can be divided into different areas that look at the structure, function, anatomy, and behavior of organisms.

• Question 481: The photosynthetic pigments include Options:
  A) chlorophll and carotenoids
  B) chloroplasts and cytochromes
  C) melanin and haemoglobin
  D) carotenoids and haemoglobin
  Show Answer
  The correct answer is A .
• Question 482:

  The greatest amount of energy would be obtained by the Oxidation of 100kg of

  Options:
  A) Meat
  B) Butter
  C) Sugar
  D) Biscuit
  Show Answer
  The correct answer is B .
• Question 483: Water loss is regulated in plants and animals by both the Options:
  A) scales and the skin
  B) scales and the hair
  C) thick leaves and the feathers
  D) leathery cuticle and the feathers
  Show Answer
  The correct answer is D .
• Question 484: If a woman who is a carrier of sickle cell trait (AS) married a man who is a sickler (SS) and they had four children, how many of them would be normal? Options:
  A) Three
  B) Two
  C) One
  D) None
  Show Answer
  The correct answer is D .
• Question 485: If the pair of alleles for baldness is given as Bb, a female carrier will be denoted by Options:
  A) X^bY^B
  B) X^BX^B
  C) X^BY
  D) X^BbX^b
  Show Answer
  The correct answer is D .
• Question 486:

  The process in which plant uses sunlight to synthesize nutrients from carbon dioxide and water is called

  Options:
  A) Locomotion
  B) Homeostasis
  C) Transpiration
  D) Photosynthesis
  Show Answer
  The correct answer is D .
• Question 487: The deficiency of vitamin D leads to Options:
  A) scurvy
  B) pellagra
  C) rickets
  D) beriberi
  E) polio
  Show Answer
  The correct answer is C .
• Question 488: The function of the loop of Henle is to Options:
  A) increase the flow of urine
  B) concentrate amino acids in the kidney tissue
  C) concentrate sodium chloride in the medulla of the kidney
  D) increase the volume of urine
  Show Answer
  The correct answer is C .
• Question 489: The correct order in a food chain involving the organisms (1)Grasses, (2)Hawks, (3)Snakes, (4)Grasshopper, (5)Lizards is Options:
  A) 1 2 3 4 5
  B) 5 4 3 2 1
  C) 1 4 5 3 2
  D) 3 2 4 5 1
  Show Answer
  The correct answer is C .
• Question 490:

  

  In the illustration above, the genotypes of the offsprings are

  Options:
  A) 1 heterozygous smooth : 2 homozygous smooth : 1 wrinkled
  B) 1 homozygous smooth : 2 heterozygous smooth : 1 wrinkled
  C) 2 homozygous smooth : 2 wrinkled
  D) 3 heterozygous smooth : 2 wrinkled
  Show Answer
  The correct answer is B .