JAMB and WAEC Biology questions

791 questions with answers and explanations. Tap an option to check yourself.

All topics Cell structure and organisation · 56 Cellular activities · 56 Co-ordination and control · 58 Ecology · 71 Evolution · 45 Excretion · 52 Growth · 45 Heredity and variation · 60 Nutrition · 64 Reproduction · 62 Respiration · 55 Support and movement · 50 Transport · 57 Variety of organisms · 60

Question 481· Nutrition· JAMB
Cows digest cellulose with the help of
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Answer: D. microorganisms in the rumen
Explanation and discussion
Question 482· Nutrition· WAEC
Lack of iodine in the diet causes
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Answer: D. goitre
Explanation and discussion
Question 483· Nutrition· WAEC
Bleeding gums and slow healing of wounds in a sailor without fresh fruit on a long voyage point to a lack of
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Answer: C. vitamin C
Explanation and discussion
Question 484· Nutrition· WAEC
The dental formula of an adult human shows that the number of molars in each half of each jaw is
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Answer: B. 3
Explanation and discussion
Question 485· Nutrition· JAMB
Insectivorous plants such as the pitcher plant trap insects mainly to obtain
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Answer: B. nitrogen
Explanation and discussion
Question 486· Nutrition· WAEC
Kwashiorkor in young children is caused mainly by lack of
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Answer: C. protein
Explanation and discussion
Question 487· Nutrition· WAEC
Digested food is absorbed mainly through the
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Answer: C. villi of the ileum
Explanation and discussion
Question 488· Nutrition· WAEC
A variegated leaf tested for starch shows starch only in the green parts. This shows that
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Answer: A. chlorophyll is necessary for photosynthesis
Explanation and discussion
Question 489· Nutrition· JAMB
In photosynthesis, oxygen is released from the splitting of:
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Answer: B. water
Explanation and discussion
Question 490· Nutrition· JAMB
The vitamin needed for normal blood clotting is
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Answer: C. vitamin K
Explanation and discussion
Question 491· Nutrition· WAEC
Bile helps digestion by
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Answer: A. emulsifying fats
Explanation and discussion
Question 492· Nutrition· WAEC
The raw materials for photosynthesis are
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Answer: D. carbon dioxide and water
Explanation and discussion
Question 493· Nutrition· WAEC
The enzyme that digests starch in the mouth is
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Answer: D. salivary amylase (ptyalin)
Explanation and discussion
Question 494· Nutrition· JAMB
The mineral element that forms part of the chlorophyll molecule is
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Answer: A. magnesium
Explanation and discussion
Question 495· Nutrition· JAMB
The villi in the ileum increase absorption of digested food mainly by
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Answer: C. increasing the surface area
Explanation and discussion
Question 496· Nutrition· JAMB
Kwashiorkor is caused by a lack of
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Answer: D. protein
Explanation and discussion
Question 497· Nutrition· JAMB
Bile is produced by the
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Answer: A. liver
Explanation and discussion
Question 498· Nutrition· JAMB
Which of the following feeds parasitically?
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Answer: C. tapeworm
Explanation and discussion
Question 499· Nutrition· WAEC
Deficiency of vitamin C causes
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Answer: C. scurvy
Explanation and discussion
Question 500· Nutrition· JAMB
Which set of conditions is necessary for photosynthesis?
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Answer: A. light, carbon(IV) oxide, water and chlorophyll
Explanation and discussion

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JAMB and WAEC Biology questions

Cows digest cellulose with the help of

Lack of iodine in the diet causes

Bleeding gums and slow healing of wounds in a sailor without fresh fruit on a long voyage point to a lack of

The dental formula of an adult human shows that the number of molars in each half of each jaw is

Insectivorous plants such as the pitcher plant trap insects mainly to obtain

Kwashiorkor in young children is caused mainly by lack of

Digested food is absorbed mainly through the

A variegated leaf tested for starch shows starch only in the green parts. This shows that

In photosynthesis, oxygen is released from the splitting of:

The vitamin needed for normal blood clotting is

Bile helps digestion by

The raw materials for photosynthesis are

The enzyme that digests starch in the mouth is

The mineral element that forms part of the chlorophyll molecule is

The villi in the ileum increase absorption of digested food mainly by

Kwashiorkor is caused by a lack of

Bile is produced by the

Which of the following feeds parasitically?

Deficiency of vitamin C causes

Which set of conditions is necessary for photosynthesis?