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 891: The major site of photosynthesis in the leaf is the Options:
  A) palisade parenchyma
  B) mesophyll parenchyma
  C) upper epidermis
  D) lower epidermis
  Show Answer
  The correct answer is A .
• Question 892:

  Germination is the process in which a seed

  Options:
  A) Begins to photosynthesize
  B) Develops into a mature plant
  C) Absorbs nutrients from the soil
  D) Breaks dormancy and starts to grow
  Show Answer
  The correct answer is D .
• Question 893: One of the functions of UNICEF is to Options:
  A) prevent and control major disease
  B) prevent diseases outbreak by administering vaccines
  C) improve the health and nutrition of children and nursing mothers
  D) monitir enviromental pollution
  Show Answer
  The correct answer is C .
• Question 894: Chewing the cud is an adaptation peculiar to Options:
  A) Herbivores
  B) Omnivores
  C) Rodents
  D) Ruminants
  Show Answer
  The correct answer is D .
• Question 895: What will happen wen two equal sized pieces of unripe pawpaw labelled X and Y are dropped into equal volumes of concentrated salt solution and distilled water respectively? Options:
  A) pawpaw X will become turgid
  B) both will increase in size
  C) pawpaw Y will become turgid
  D) both will decrease in size
  Show Answer
  The correct answer is C .
• Question 896: In which of these association is much harm done to one of the partners? Options:
  A) Symbiosis
  B) Epiphytism
  C) Commensalism
  D) Parasitism
  E) Mutualism
  Show Answer
  The correct answer is D .
• Question 897: The breakdown of fats and oils into simpler absorbable compounds is catalyzed by the group of enzymes called Options:
  A) lipases
  B) hydrolases
  C) amylases
  D) peptidases
  Show Answer
  The correct answer is A .
• Question 898:
  

  Which of the labelled parts is the diastema?

  Options:
  A) 2
  B) 3
  C) 4
  D) 6
  Show Answer
  The correct answer is B .
• Question 899: The exchange of genes between homologous chromosomes is called Options:
  A) test cross
  B) back cross
  C) crossing-over
  D) mutation
  Show Answer
  The correct answer is C .
• Question 900: Which of the following is the dental formula of man? Options:
  A) i(2/2) c(0/1) pm(2/2) m(3/3)
  B) i(2/2) c(1/1) pm(2/0) m(3/3)
  C) i(2/2) c(1/1) pm(2/2) m(3/3)
  D) i(2/2) c(1/1) pm(3/3) m(2/2)
  E) i(2/2) c(1/1) pm(2/3) m(3/3)
  Show Answer
  The correct answer is C .