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 1071: In a dicot leaf, guard cells differ from other epidermal cells because they Options:
  A) have no definite shape
  B) lack nuclei
  C) are smaller
  D) contain chloroplast
  E) lack vacuole
  Show Answer
  The correct answer is D .
• Question 1072: A relationship between living organisms which is of mutual benefit is Options:
  A) parasitism
  B) saprophtism
  C) ecosystem
  D) symbiosis
  E) commensalism
  Show Answer
  The correct answer is D .
• Question 1073: An old man is likely to be long-sighted because age affects the Options:
  A) optic nerves
  B) retina
  C) ciliary muscles
  D) cornea
  E) aqueous humour
  Show Answer
  The correct answer is B .
• Question 1074: In a dicotyledonous stem, the zone between the epidermis and the pericycle is the Options:
  A) cortex
  B) stele
  C) xylem
  D) ploem
  Show Answer
  The correct answer is A .
• Question 1075: A characteristic of vertebrates that is unique to mammals is Options:
  A) the presence of pentadctyl limbs
  B) parental care
  C) the possession of scrotum
  D) pulmonary circulation
  Show Answer
  The correct answer is C .
• Question 1076: The mineral nutrient that is most bound to the soil is Options:
  A) phosphorus
  B) calcium
  C) iron
  D) potassium
  Show Answer
  The correct answer is C .
• Question 1077: If a handful of soil is shaken with water and left to settle, the soil particles will settle from light to heavy particles as follows Options:
  A) humus, clay, silt, sand, stones
  B) humus, silt, clay, sand, stones
  C) humus, clay,silt, stones, sand
  D) humus, sand, silt, clay, stones
  E) clay, humus, silt, sand, stones
  Show Answer
  The correct answer is A .
• Question 1078: Which of the following sequences is the correct arrangement of tissues in the anatomy of a young dicotyledonous stem from the inside to the outside ? Options:
  A) pith , phloem, cambium, xylem, parenchyma, collenchyma and epidermis
  B) Xylem, phloem, cambium, cortex, endodermis, collenchyma and epidermis
  C) Pith,xylem, cmbium,phloem,, collenchyma, parenchyma and epidermis
  D) phloem, xylem, cambium, cortex, endodermis, collenchyma and epidermis
  Show Answer
  The correct answer is C .
• Question 1079: Stomata of some plants are sunken and protected by hairs. These are features of Options:
  A) mesophytes
  B) epiphytes
  C) hydrophytes
  D) xerophytes
  Show Answer
  The correct answer is D .
• Question 1080: which of these type of skeleton is most appropriate for a cockroach? Options:
  A) Hydrostatic skeleton
  B) Exoskeleton
  C) Endoskeleton
  D) Cartilaginous skeleton
  E) Bony skeleton
  Show Answer
  The correct answer is B .