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JAMB Biology Past Questions 2016

10 questions from the JAMB 2016 Biology paper, with answers and explanations. Tap "Show answer" under each one when you are ready.

JAMB 2016Question 1 · Agricultural Science and Basic Biology
The ability of a living organism to detect and respond to changes in the environment is referred to as
  1. A.locomotion
  2. B.taxis
  3. C.irritability
  4. D.growth
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Answer: C. irritability

Irritability (sensitivity) is the ability of an organism to detect and respond to environmental changes.

JAMB 2016Question 2 · Cell Biology and Biochemistry
When a cell is placed in solution and the size of the cell increases, the concentration of solution is said to be
  1. A.isotonic
  2. B.dilute
  3. C.hypotonic
  4. D.hypertonic
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Answer: C. hypotonic

A hypotonic solution (lower solute concentration than the cell) causes water to enter the cell by osmosis, increasing its size.

JAMB 2016Question 3 · Ecology and Environment
Which of the following is NOT a method of conserving wild life?
  1. A.Indiscriminate poaching
  2. B.Establishment of zoological gardens
  3. C.Enacting wildlife conservation laws
  4. D.Establishment of game reserves
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Answer: A. Indiscriminate poaching

Indiscriminate poaching depletes wildlife populations and is not a conservation method, unlike establishing zoos, game reserves, or wildlife laws.

JAMB 2016Question 4 · Ecology and Environment
The ability of chameleon to change its colour rapidly is an adaptation for
  1. A.obtaining food
  2. B.attraction mate
  3. C.communication
  4. D.escaping detection
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Answer: D. escaping detection

Rapid colour change in chameleons is primarily an adaptation for escaping detection by predators (camouflage).

JAMB 2016Question 5 · Ecology and Environment
In which of the following groups of vertebrates is parental care mostly exhibited?
  1. A.Aves
  2. B.Reptilia
  3. C.Amphibia
  4. D.Mammalia
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Answer: D. Mammalia

Mammals exhibit the most extensive parental care among vertebrate groups.

JAMB 2016Question 6 · Ecology and Environment
In which of the following species is the biomass of an individual the smallest?
  1. A.Tilapia sp
  2. B.Agama sp
  3. C.Bufo sp
  4. D.Spirogvra sp
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Answer: D. Spirogvra sp

Spirogyra, a simple filamentous alga, has the smallest individual biomass among the organisms listed.

JAMB 2016Question 7 · Genetics and Evolution
The hereditary characters in plants and animals are located on the
  1. A.gene
  2. B.mucleus
  3. C.chromosome
  4. D.cell
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Answer: C. chromosome

Hereditary characters are located on chromosomes (as genes).

JAMB 2016Question 8 · Mammalian Physiology and Anatomy
Which of the following organs regulates the levels of water. salts, hydrogen ions, and urea in the mammals?
  1. A.Kidney
  2. B.Colon
  3. C.Bladder
  4. D.Liver
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Answer: A. Kidney

The kidney regulates the levels of water, salts, hydrogen ions and urea in the blood.

JAMB 2016Question 9 · Microbiology and Disease
The type of asexual reproduction that is common to both Paramecium and Protists is
  1. A.fragmentation
  2. B.budding
  3. C.sporulation
  4. D.fission
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Answer: D. fission

Binary fission is the common asexual reproduction method in Paramecium and other protists.

JAMB 2016Question 10 · Plant Biology
Which of the following protects the essential parts of the flower at bud stage?
  1. A.Stamens
  2. B.Sepals
  3. C.Petals
  4. D.Carpels
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Answer: B. Sepals

Sepals protect the essential parts of a flower while it is still in the bud stage.

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