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 421:

  What is the term used to describe the maximum number of individuals of a species that an environment can support indefinitely?

  Options:
  A) Ecological niche
  B) Limiting factor
  C) Carrying capacity
  D) Density-dependent factor
  Show Answer
  The correct answer is C .
• Question 422: A surprising fact about sickle cell disease is that it Options:
  A) affects only black people
  B) kills the patient
  C) is hereditary
  D) affects blood cells
  E) weakens the patient
  Show Answer
  The correct answer is C .
• Question 423: The abilty of a chameleon to change its colour is an adaptive future for Options:
  A) attraction
  B) defence
  C) display
  D) attack
  Show Answer
  The correct answer is B .
• Question 424: Biconcave lenses are used in the correction of an eye defect called? Options:
  A) myopia
  B) colour blindnes
  C) old age
  D) hypermetropia
  E) weakening of ciliary muscles
  Show Answer
  The correct answer is A .
• Question 425:
  

  The above diagram represents a competitive interaction between organism in communities I and II. Which of the following statements is CORRECT?

  Options:
  A) The population of I was higher than II at the beginning of the experiments
  B) II was wiped out from the enviroment at the end of the experiments
  C) The population of II was always lower than that of
  D) The population of I was lower at the end of the experiment than at the beginning
  Show Answer
  The correct answer is B .
• Question 426: A fresh water plant such as water lily can solve the problem of buoyancy by the possession of Options:
  A) aerenchymarous tissues
  B) dissected leaves
  C) thin cell walls of the epidermis
  D) water-repelling epidermis
  Show Answer
  The correct answer is A .
• Question 427: The legs and beak of an egret resemble those of the heron because they Options:
  A) both feed on fishes
  B) are both birds
  C) occupy similar niche
  D) occupy the same trophic level
  Show Answer
  The correct answer is A .
• Question 428: Which of the following is true in blood transfusion? Options:
  A) person of blood group AB can donate blood only to another person of blood group AB
  B) persons of blood groups A and B can donate or receive blood from each other
  C) A person of blood group AB acn receive blood only from persons of blood group A or B
  D) A person of blood group O can donate only to a person of blood group O
  Show Answer
  The correct answer is A .
• Question 429: A severe deficiency of thyroxin results in Options:
  A) diabetes mellitus
  B) sexual underdevelopment
  C) cretinism
  D) gigantism
  Show Answer
  The correct answer is C .
• Question 430: The very bright colours in some types of mushroom Options:
  A) are warning that they may be poisonous
  B) indicate they are very taste
  C) attract potential transporters of the spores
  D) perform the same function as bright colours in flowers
  Show Answer
  The correct answer is A .