JAMB Biology Past Questions and Answers

997 questions from 18 JAMB Biology papers, 1990 to 2025. Pick a year to see 10 of its questions with answers.

Papers by year

JAMB 2025Question 1 · Animal Biology and Comparative Physiology

The mouthpart of the mosquito, which is adapted for piercing skin and sucking liquid food, is called the

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Answer: A. proboscis

The mosquito's proboscis is a slender, needle-like mouthpart adapted for piercing and sucking fluids.

JAMB 2025Question 2 · Animal Biology and Comparative Physiology

In humans, the type of teeth specially adapted for tearing food is the

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Answer: B. canine

Canines are pointed teeth adapted for gripping and tearing food.

JAMB 2025Question 3 · Cell Biology and Biochemistry

Which cell organelle contains the chromosomes and controls the cell's hereditary characteristics?

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Answer: D. nucleus

The nucleus houses the chromosomes (DNA) and controls the hereditary characteristics and activities of the cell.

JAMB 2025Question 4 · Classification

In the gastropod (snail), the hard, spirally-coiled structure that protects the soft body is called the

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Answer: C. shell

The snail's shell is a hard, spirally-coiled structure secreted by the mantle that protects its soft body.

JAMB 2025Question 5 · Plant Biology

The part of a flower that is usually brightly coloured and scented, and functions mainly to attract pollinating insects, is the

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Answer: B. petal

Petals (collectively the corolla) are typically brightly coloured and scented to attract pollinators.

Work through every paper year by year, or topic by topic, with explanations and a list of your weak spots.