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 251: Example of water-borne and sex linked diseases are Options:
  A) taeniasis and malaria
  B) cholera and gonorrhoea
  C) typhoid and syphilis
  D) dracunculiasis and haemophilia
  Show Answer
  The correct answer is D .
• Question 252: The following are example of morphological variation except Options:
  A) size
  B) ability to taste PTC
  C) color
  D) fingerprint
  Show Answer
  The correct answer is B .
• Question 253: Two main distinguishing features of the cervical vertebra are the presence of Options:
  A) short neural spine and vertebraterial canal
  B) prozygapophysis and cervical ribs
  C) large centrum and cervical ribs
  D) vertebraterial canal and large centrum
  Show Answer
  The correct answer is A .
• Question 254:

  If both parents are heterozygous for a trait, the probability that an offspring will be recessive for that trait is

  Options:
  A) $\frac{1}{2}$
  B) $\frac{3}{4}$
  C) $\frac{1}{4}$
  D) $1$
  Show Answer
  The correct answer is C .
• Question 255:

  

  The bones labelled II are called

  Options:
  A) lumbar vertebrae
  B) thoracic vertebrae
  C) cervical vertebrae
  D) sacral vertebrae
  Show Answer
  The correct answer is A .
• Question 256: In which of the following groups of vertebrates is parental care mostly exhibited ? Options:
  A) Reptilia
  B) Amphibia
  C) Aves
  D) Mammalia
  Show Answer
  The correct answer is D .
• Question 257: Nitrogen is released into the atmosphere when ________ Options:
  A) plants absorbs mineral salt
  B) sugar is completely broken down
  C) through plant uptake
  D) when lightning strike
  Show Answer
  The correct answer is D .
• Question 258: 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 .
• Question 259: The part of the mammalian ear responsible for the maintenance of balance is the Options:
  A) cochlea
  B) pinna
  C) perilymph
  D) vestibular system
  Show Answer
  The correct answer is D .
• Question 260:

  One of the functions of the xylem is?

  Options:
  A) strengthening the stem
  B) manufacturing food
  C) reducing loss of water
  D) conducting manufactured food
  Show Answer
  The correct answer is A .