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 441: The ability of chemelon to change its colour rapidly is an adaptation for Options:
  A) obtaining food
  B) attraction mate
  C) communication
  D) escaping detection
  Show Answer
  The correct answer is D .
• Question 442: Anaerobic respiration in yeast produces Options:
  A) Carbondioxide and ethanol
  B) Carbondioxide and water
  C) Carbondioxide and oxygen
  D) Carbondioxide and glucose
  E) Ethanol and water
  Show Answer
  The correct answer is A .
• Question 443: Which of the following relationship involves only one organism? Options:
  A) Saprophytism
  B) commensalism
  C) Parasitism
  D) Symbiosis
  Show Answer
  The correct answer is A .
• Question 444:

  One of the following is a process of transmission of hereditary characteristics by chromosomes

  Options:
  A) Genes relating to the same character occupy identical locations on the chromosomes
  B) Separation of homologous chromosomes into four daughter cells
  C) Separation of gametes during fertilization
  D) Dictating the formation of a protein by a gene in a chromosome
  Show Answer
  The correct answer is D .
• Question 445:

  The waste product of insects is?

  Options:
  A) uric acid
  B) urine
  C) Mucilage
  D) sweat
  Show Answer
  The correct answer is A .
• Question 446:

  One of the functions of water in seed germination is to?

  Options:
  A) dilute the embryo
  B) make the soil wet and soft
  C) activate the enzymes
  D) promote aerobic respiration
  Show Answer
  The correct answer is C .
• Question 447: 28 g soil sample was heated to a constant weight of 24 g. When further heated to red hot and cooled, it weighed 18 g. What is the percentage of humus in the soil? Options:
  A) 22.2
  B) 55.6
  C) 75.0
  D) 25.0
  E) 35.7
  Show Answer
  The correct answer is A .
• Question 448: The supporting tissue in xylem is most poorly developed in Options:
  A) mangrove swamp plants
  B) grassland plants
  C) submerged water plants
  D) desert plants
  Show Answer
  The correct answer is C .
• Question 449: The appendicular skeleton is composed of the pectoral girdle Options:
  A) pelvic girdle, fore and hind limbs
  B) pelvic girdle and fore limns
  C) lumbar vertebrae and pelvic girdle
  D) lumbar vertebrae, fore and hind limbs
  Show Answer
  The correct answer is A .
• Question 450: Which of these is the terminal portion of the alimentary canal of a mammal? Options:
  A) Oesophagus
  B) Stomach
  C) Rectum
  D) Colon
  E) Appendix
  Show Answer
  The correct answer is C .