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 71: The most common means of transmiting the Acquired Immune Deficiency Syndrome (AIDS) is Options:
  A) from mother to child
  B) through blood transfusion
  C) through sexual intercourse
  D) through the sharing of needles
  Show Answer
  The correct answer is C .
• Question 72: In plants, the structures that play roles similar to the arteries and veins of animals are the Options:
  A) xylem and phloem
  B) root hair and xylem
  C) lenticels and phloem
  D) roots and stems
  Show Answer
  The correct answer is A .
• Question 73: The characters by which an organism is recognized are termed its Options:
  A) phenotype
  B) genotype
  C) morphology
  D) anatomy
  E) physiology
  Show Answer
  The correct answer is A .
• Question 74: At fertilization Options:
  A) one chromosome from the male joins another from the female
  B) one gene from the male combines with another from the female
  C) the male nucleus fuses with the female nucleus
  D) one set of chromosome combines with another set from the female
  E) one cell from the male fuses with another from the female
  Show Answer
  The correct answer is C .
• Question 75: The part of the brain that regulates most biological cycles in humans is Options:
  A) olfactory lobe
  B) optic lobe
  C) medulla oblongata
  D) pineal body
  Show Answer
  The correct answer is C .
• Question 76: The outermost embryonic membrane in the mammal is the Options:
  A) amnion
  B) chorion
  C) allantois
  D) yolk sac
  Show Answer
  The correct answer is B .
• Question 77: 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 78:

  In the theory of use and disuse Lamarck proposed that evolution occurred because of the following except

  Options:
  A) There is natural selection of offspring
  B) There is great changes in the environment
  C) Organism develop specialised characters
  D) The characters are inheritable
  Show Answer
  The correct answer is A .
• Question 79: A phenotypic character with intermediate forms that can be graded from one extreme to the other is referred to as Options:
  A) discontinuous variation
  B) continuous variation
  C) a mutant
  D) a genome
  Show Answer
  The correct answer is B .
• Question 80: Bryophtes are different from flower because they Options:
  A) live in moist habita
  B) are small plants
  C) reproduce sexually and asexually
  D) have small leaves
  E) have no vascular tissue
  Show Answer
  The correct answer is E .