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JAMB Biology Past Questions 2015

10 questions from the JAMB 2015 Biology paper, with answers and explanations. Tap "Show answer" under each one when you are ready.

JAMB 2015Question 1 · Agricultural Science and Basic Biology
The scientific study of life is
  1. A.Botany
  2. B.Biology
  3. C.Zoology
  4. D.Ecology
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Answer: B. Biology

Biology is the scientific study of life.

JAMB 2015Question 2 · Cell Biology and Biochemistry
In eukaryotic cells,cellular respiration takes place in the
  1. A.nucleus
  2. B.cytoplasm
  3. C.centrioles
  4. D.mitochondrion
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Answer: D. mitochondrion

Cellular respiration in eukaryotic cells takes place in the mitochondrion.

JAMB 2015Question 3 · Cell Biology and Biochemistry
One of the following is the unit of life
  1. A.cell
  2. B.tissues
  3. C.organ
  4. D.system
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Answer: A. cell

The cell is regarded as the basic unit of life.

JAMB 2015Question 4 · Ecology and Environment
The following animals are invertebrate except
  1. A.flat worms
  2. B.round worms
  3. C.chordate
  4. D.protozoan
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Answer: C. chordate

Chordates possess a notochord/vertebral characteristics distinguishing them from true invertebrates like flatworms, roundworms, and protozoans.

JAMB 2015Question 5 · Mammalian Physiology and Anatomy
Which of the following serves as the brain box in man
  1. A.skeleton
  2. B.skull
  3. C.head
  4. D.spinal column
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Answer: B. skull

The skull serves as the protective brain box (cranium) in man.

JAMB 2015Question 6 · Mammalian Physiology and Anatomy
The followings are the functions of the kidneys, except
  1. A.Regulation of water content in the blood
  2. B.Maintenance of blood PH and homeostasis
  3. C.Excretion of CO2
  4. D.D. Removal of waste products from the blood
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Answer: C. Excretion of CO2

Excretion of carbon(IV) oxide is a function of the lungs, not the kidneys.

JAMB 2015Question 7 · Mammalian Physiology and Anatomy
Which of these is not detected by the nerve endings of the skin?
  1. A.cold
  2. B.pain
  3. C.pressure
  4. D.weakness
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Answer: D. weakness

Weakness is a general physiological state, not a specific stimulus detected by skin nerve endings, unlike cold, pain, and pressure.

JAMB 2015Question 8 · Mammalian Physiology and Anatomy
White blood cells are also known as
  1. A.erythrocytes
  2. B.leucocytes
  3. C.lymphocytes
  4. D.phagocytes
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Answer: B. leucocytes

White blood cells are also known as leucocytes.

JAMB 2015Question 9 · Microbiology and Disease
The following are examples of air borne diseases, except
  1. A.Chicken pox
  2. B.Cholera
  3. C.common cold
  4. D.Whooping cough
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Answer: B. Cholera

Cholera is a water-borne disease, unlike chicken pox, the common cold, and whooping cough, which spread through the air.

JAMB 2015Question 10 · Plant Biology
An association between bacteria and root nodules of legume is called
  1. A.Commensalism
  2. B.mutualism
  3. C.parasitism
  4. D.saprophytism
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Answer: B. mutualism

The association between nitrogen-fixing bacteria (Rhizobium) and legume root nodules is a mutualistic relationship.

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