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 501: 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 502:

  Thunderstorm can be beneficial to plants because it

  Options:
  A) adds line to the soil
  B) kills the pest that attacks crops
  C) destroys some of the major crops
  D) adds nitrate to the soil
  Show Answer
  The correct answer is D .
• Question 503:

  

  Which of the labelled parts of the cell contains ribonucleic acid?

  Options:
  A) 1
  B) 2
  C) 3
  D) 5
  Show Answer
  The correct answer is C .
• Question 504: Which of the following is NOT a function of the liver? Options:
  A) Regulation of blood sugar
  B) Storage of iron
  C) Formation of bile
  D) Breakdown of excess amino acids
  E) Excretion of urea from the blood
  Show Answer
  The correct answer is E .
• Question 505: Plants adapted for life in salty marsh are called Options:
  A) hydrophytes
  B) xerophytes
  C) halophytes
  D) epiphytes
  Show Answer
  The correct answer is C .
• Question 506:

  

  The part labelled II is the

  Options:
  A) fenestra ovalis
  B) middle ear canal
  C) internal auditrory meatus
  D) ear ossicles
  Show Answer
  The correct answer is D .
• Question 507: The correct sequence of tissues in the anatomy of a young dicotyledonous stem from the inside to the outside is Options:
  A) pith, phloem, cambium, xylem, parenchyma, collenchyma and epidermis
  B) xylem, phloem, cambium, cortex, endodermis, collenchyma and epidermis
  C) pith, xylem, cambium, phloem, collenchyma, parenchyma and epidermis
  D) phhloem, xylem, cambium, cortex, endodermis, collenchyma and epidermis
  Show Answer
  The correct answer is C .
• Question 508: In a soil sample, the relative amouunts of the different soil particles can best be determined by the process of Options:
  A) filtration
  B) centrifugation
  C) precipitation
  D) sedimentation
  Show Answer
  The correct answer is D .
• Question 509: Carbon (iv) oxide is added to the atmosphere when ________? Options:
  A) plants build-up organic compounds
  B) plants absorb mineral salts
  C) sugars are completely broken down in animals
  D) there is thunderstorm
  Show Answer
  The correct answer is A .
• Question 510: Woman do not suffer from colour blindness because Options:
  A) the trait is sex-linked
  B) only men are colour blind
  C) the genes are recessive and sex-linked
  D) the genes occur on both the X and Y chromosomes
  Show Answer
  The correct answer is C .