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 871: In fish the sense organs which detect movements in water are located within the Options:
  A) gills
  B) operculum
  C) nostrils
  D) median fin
  E) lateral line
  Show Answer
  The correct answer is E .
• Question 872: The theory of survival of the fittest was propounded by Options:
  A) Darwin
  B) Lamarck
  C) Linnaeus
  D) Mendel
  Show Answer
  The correct answer is A .
• Question 873:

  When a Spirogyra cell is immersed in a salt solution more concentrated than its cell sap,it?

  Options:
  A) remains unchanged
  B) takes tip water and burst
  C) absorbs a little water
  D) loses water and shrivels
  Show Answer
  The correct answer is D .
• Question 874: Viviparity occurs mainly in the Options:
  A) mammals
  B) reptiles
  C) aves
  D) amphibians
  Show Answer
  The correct answer is A .
• Question 875:

  

  Which organism in the food-web illustrated above is an omnivore?

  Options:
  A) Weevils
  B) Rat
  C) Hawk
  D) Prayer mantis
  Show Answer
  The correct answer is B .
• Question 876: What is the genetic ratio of a cross between homozygous tall plant and a homozygous dwarf plant? Options:
  A) 0 tall : 4 short
  B) 3 tall : 1 short
  C) 2 short : 2 tall
  D) 1 tall : 1 short
  E) 4 tall : o short
  Show Answer
  The correct answer is E .
• Question 877:

  

  The part labelled 3 is the

  Options:
  A) leaf scar
  B) lenticle
  C) auxillary bud
  D) girdle scar
  Show Answer
  The correct answer is C .
• Question 878: A pair of genes that control a trait is referred to as Options:
  A) an allele
  B) recessive
  C) dominant
  D) a hybird
  Show Answer
  The correct answer is A .
• Question 879: A mixture of mercurous and mercuric nitrates is added to a food substance. A white precipitates is formed which on gentle heating turns red. The food substance is Options:
  A) Protein
  B) Oil
  C) Carbohydrates
  D) Fat
  E) Fatty acid
  Show Answer
  The correct answer is A .
• Question 880: Which of these disease CANNOT be prevented by immunization? Options:
  A) Poliomyelitis
  B) Tuberculosis
  C) Cholera
  D) onchocerciasis
  Show Answer
  The correct answer is D .