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 1711: The extract from food substance reacting with sodium hydroxide and copper sulphate solutions will produce violet to purple coloration if Options:
  A) fats are presents
  B) carbohydrate is present
  C) protein is present
  D) reducing sugar is presents
  Show Answer
  The correct answer is C .
• Question 1712:

  

  The type of placentation shown is

  Options:
  A) axial
  B) marginal
  C) parietal
  D) central
  Show Answer
  The correct answer is B .
• Question 1713: A gland in the human body secretes two hormones, one of which causes a disease called diabetes when there is a deficiency. Which of these organ produce the hormone? Options:
  A) spleen
  B) Parathyroid
  C) Adrenal body
  D) Thyroid
  E) Pancreas
  Show Answer
  The correct answer is E .
• Question 1714: Which of the following invertebrates does NOT possess antennae? Options:
  A) Centipede
  B) Crustacean
  C) Millipede
  D) Insect
  E) Spider
  Show Answer
  The correct answer is E .
• Question 1715: Plants tend to prevent overcrowding by means of efficient Options:
  A) water uptake
  B) seed germination
  C) pollination
  D) seed dispersal
  Show Answer
  The correct answer is D .
• Question 1716: In the life history of butterfly, destruction of crops is caused by the Options:
  A) maggot
  B) nymph
  C) caterpillar
  D) pupa
  Show Answer
  The correct answer is C .
• Question 1717: The association between bacteria residing in the caecum and the ruminant is Options:
  A) parastitism
  B) predation
  C) saprophytism
  D) mutualism
  Show Answer
  The correct answer is D .
• Question 1718: Snails belong to the phylum Options:
  A) Annelida
  B) Mollusca
  C) Echinodermata
  D) nematode
  Show Answer
  The correct answer is B .
• Question 1719: The special pigment for colour change in chameleon is Options:
  A) melanin
  B) carotenoid
  C) chromatin
  D) chromatophore
  Show Answer
  The correct answer is D .
• Question 1720:

  Which of the following best describes physiological variation in biology?

  Options:
  A) Variations in the physiological processes and functions of organisms
  B) Differences in physical characteristics and appearance within a population
  C) Differences in behavior and social interactions among individuals
  D) Variations in the genetic makeup of individuals within a species
  Show Answer
  The correct answer is A .