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 11: Which of the following is true of leucocytes? Options:
  A) they are respiratory pigments
  B) they are most numerous and ramify all cells
  C) they are large and nucleated
  D) they are involved in blood clotting
  Show Answer
  The correct answer is C .
• Question 12: Which of the following characteristics is common to Amoeba and Paramecium? Options:
  A) Oral groove
  B) Trichocyst
  C) Contractile vacuole
  D) Cilia
  Show Answer
  The correct answer is C .
• Question 13: 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 14:

  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 15: At which trophic level would the highest accumulation of a non-biodegradable substance occur? Options:
  A) Primary producers
  B) Tertiary consumers
  C) Primary consumers
  D) Secondary consumers
  Show Answer
  The correct answer is B .
• Question 16:

  Which of the following eye defects is caused by the inability of the eye to focus light on the retina?

  Options:
  A) Glaucoma
  B) Myopia
  C) Cataracts
  D) Astigmatism
  Show Answer
  The correct answer is B .
• Question 17: An organism that has been extensively used to test the chromosomes theory of heredity is Options:
  A) Drosophila melanogaster
  B) Muscar domestica
  C) Zea mays
  D) Homo sapiens
  Show Answer
  The correct answer is A .
• Question 18: Fungi are heterotropic because they Options:
  A) have no leaves
  B) lack roots
  C) are filamentous
  D) lack chlorophyll
  Show Answer
  The correct answer is D .
• Question 19: A green snake in green grass is able to escape notice from predators because of its Options:
  A) disruptive colouration
  B) counter shading
  C) warning colouration
  D) cryptic colouration
  Show Answer
  The correct answer is D .
• Question 20: Which of the following organisms is both parasitic and autotrophic? Options:
  A) Sundew
  B) Lorathus
  C) Rhizopus
  D) Tapeworm
  Show Answer
  The correct answer is A .