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 2221: The homozygous condition Hb^sHb^sresults in sickle cell anaemia whereas Hb^AHb^s has the sickling trait. What is the probability that a couple with the sickling trait will give birth to one normal child? Options:
  A) 1/2
  B) 1/4
  C) 1/8
  D) none
  Show Answer
  The correct answer is B .
• Question 2222: The following organisms are hermaphrodites EXCEPT Options:
  A) snail
  B) Taenia
  C) Schistosoma
  D) Earth worm
  Show Answer
  The correct answer is C .
• Question 2223: The following are kidney diseases EXCEPT Options:
  A) diuresis
  B) Hepatitis
  C) kidney stones
  D) nephritis
  E) oedema.
  Show Answer
  The correct answer is B .
• Question 2224: Hassan and Hussain are identical twins but Hassan grows taller and fatter from Hussain. This is probably because Options:
  A) Hassain inherits genes for tallness and fattness from the father
  B) They have dissimilar genotypes
  C) Hussain is endowed with genes for shortness and thinness
  D) They are raised in different environment
  Show Answer
  The correct answer is B .
• Question 2225: The removal of remnant particles of digestion from the body is called Options:
  A) assimilation
  B) egestion
  C) elimination
  D) excretion
  Show Answer
  The correct answer is B .
• Question 2226: Treatment of a poor soil with lime supplies Options:
  A) Sulphur
  B) Calcium
  C) Phosphorus
  D) Sodium
  E) Nitrogen
  Show Answer
  The correct answer is B .
• Question 2227: Which of the following statement is NOT true of symbiosis? Options:
  A) Symbionts must be living
  B) It is an association of 'give and take'
  C) The association may involve two plants
  D) Association between two similar species
  E) Symbionts derive mutual benefit
  Show Answer
  The correct answer is D .
• Question 2228: The companion cells are part of the Options:
  A) pericycle
  B) phloem
  C) pith
  D) xylem
  Show Answer
  The correct answer is B .
• Question 2229: Seed plants are the most dominant vegetation on land because of Options:
  A) their motile gamates
  B) their ability to photosynthesize
  C) efficient seed dispersal
  D) availability of water
  Show Answer
  The correct answer is C .
• Question 2230: The hereditary materials of the cell is Options:
  A) the R N A
  B) protein
  C) the D N A
  D) carbohydrate
  Show Answer
  The correct answer is C .