WAEC Biology questions

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

All topics Cell structure and organisation · 26 Cellular activities · 24 Co-ordination and control · 27 Ecology · 33 Evolution · 18 Excretion · 22 Growth · 18 Heredity and variation · 24 Nutrition · 30 Reproduction · 29 Respiration · 25 Support and movement · 22 Transport · 27 Variety of organisms · 28

Question 301· Transport· WAEC
Xylem vessels transport
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Answer: C. water and mineral salts
Explanation and discussion
Question 302· Transport· WAEC
Water vapour leaving a plant through its stomata is called
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Answer: D. transpiration
Explanation and discussion
Question 303· Transport· WAEC
Digested food is carried round the body mainly in the blood
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Answer: C. plasma
Explanation and discussion
Question 304· Transport· WAEC
The hepatic portal vein carries blood from the
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Answer: A. intestines to the liver
Explanation and discussion
Question 305· Transport· WAEC
The vessel that carries blood from the heart to the lungs is the
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Answer: C. pulmonary artery
Explanation and discussion
Question 306· Transport· WAEC
Which blood cells defend the body against infection?
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Answer: D. White blood cells
Explanation and discussion
Question 307· Transport· WAEC
Which blood vessel carries oxygenated blood from the lungs to the heart?
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Answer: C. pulmonary vein
Explanation and discussion
Question 308· Transport· WAEC
Blood vessels that carry blood away from the heart are
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Answer: A. arteries
Explanation and discussion
Question 309· Transport· WAEC
Which conditions increase the rate of transpiration?
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Answer: A. dry, warm and windy air
Explanation and discussion
Question 310· Transport· WAEC
Blood platelets are important in
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Answer: D. blood clotting
Explanation and discussion
Question 311· Transport· WAEC
The smallest blood vessels, whose walls are one cell thick, are
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Answer: A. capillaries
Explanation and discussion
Question 312· Transport· WAEC
Transpiration is increased by
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Answer: D. high temperature and wind
Explanation and discussion
Question 313· Transport· WAEC
Red blood cells carry oxygen because they contain
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Answer: D. haemoglobin
Explanation and discussion
Question 314· Transport· WAEC
The chamber of the heart with the thickest muscular wall is the
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Answer: A. left ventricle
Explanation and discussion
Question 315· Transport· WAEC
Xylem tissue transports
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Answer: D. water and mineral salts
Explanation and discussion
Question 316· Transport· WAEC
A person with blood group O is called a universal donor because their red cells have
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Answer: C. no A or B antigens
Explanation and discussion
Question 317· Transport· WAEC
Valves in veins
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Answer: B. prevent backflow of blood
Explanation and discussion
Question 318· Transport· WAEC
Blood platelets help in
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Answer: D. clotting
Explanation and discussion
Question 319· Transport· WAEC
The heart valve between the left atrium and left ventricle is the
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Answer: A. bicuspid (mitral) valve
Explanation and discussion
Question 320· Transport· WAEC
The thickest wall of the heart is that of the
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Answer: A. left ventricle
Explanation and discussion

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WAEC Biology questions

Xylem vessels transport

Water vapour leaving a plant through its stomata is called

Digested food is carried round the body mainly in the blood

The hepatic portal vein carries blood from the

The vessel that carries blood from the heart to the lungs is the

Which blood cells defend the body against infection?

Which blood vessel carries oxygenated blood from the lungs to the heart?

Blood vessels that carry blood away from the heart are

Which conditions increase the rate of transpiration?

Blood platelets are important in

The smallest blood vessels, whose walls are one cell thick, are

Transpiration is increased by

Red blood cells carry oxygen because they contain

The chamber of the heart with the thickest muscular wall is the

Xylem tissue transports

A person with blood group O is called a universal donor because their red cells have

Valves in veins

Blood platelets help in

The heart valve between the left atrium and left ventricle is the

The thickest wall of the heart is that of the