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Wednesday, 01 July 2026
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Biology Past Questions and Answers

Topic: Animalia

Jamb Biology Questions - Animalia

Question 226:
The butterfly is of great economic importance because
  • A Of it's use in scientific studies
  • B It sucks nectar from flowers
  • C It adds to the beauty of the environment
  • D It pollinates flowers of crops and other plants
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Question 227:
The bright colours of the comb and feathers in the peacock are for?
  • A Sex differentiation
  • B Beauty
  • C Courtship
  • D Defence
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Question 228:
I. Rattus rattus.
Il. Agama agama
III. Bufo regularis
IV. Tilapia zillii

The order of evolutionary advancement of the above vertebrates is?
  • A I, II, III, IV
  • B I, IV, III, II
  • C II, III, IV, I
  • D IV, III, II, I
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Question 229:
The correct sequence for the perception of smell in mammals is?
  • A Chemicals --> olfactory nerve endings --> brain
  • B Dissolved chemicals --> nasal sensory cells --> brain
  • C Chemicals --> mucus membrane sensory cells --> brain
  • D Dissolved chemicals --> sensory cells --> olfactory nerve --> brain
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Question 230:
When a marine fish was taken from the ocean and put in a tank of fresh water, it died after a short period because?
  • A The tank was too small compared to the large-ocean
  • B The body cells of the fish swelled and burst as a result of the hypotonic fresh water
  • C The body cells of the fish shrank as their sap was hypertonic to the freshwater
  • D There was no food in the tank, so the fish starved
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